Starting solids: what the first month actually looks like

Most of what you read about starting solids describes an ideal. This describes the actual first four weeks, including the parts nobody puts on Instagram.

The headline: your baby may eat very little at first, and that is expected. The AAP notes that breast milk or formula still provides most of their nutrition early on.

When to start

Around six months, which is also where the 2025 to 2030 Dietary Guidelines for Americans put it, and readiness matters more than the date on the calendar. The American Academy of Pediatrics points to signs rather than a birthday:

• Sitting up with good head and neck control
• Opening their mouth when food comes toward them
• No longer automatically pushing food back out with their tongue
• Real interest in what you are eating

If your baby was born early or has any medical history that complicates this, your pediatrician's timing beats a general guideline every time.

Week one: it is not really about eating

The first week is practice. Start with a teaspoon or two, at a time when your baby is alert. The AAP suggests offering a little breast milk or formula first, so your baby is not frustrated by being very hungry.

Expect most of it to come back out. Expect faces. Neither is rejection. Your baby is working out a texture, a temperature, and a mechanism they have never used before, all at once.

The Dietary Guidelines say breast milk or formula stays the main source of nutrition up to 12 months. Solids are added alongside it, not swapped in.

Start with iron

Iron is worth planning for from the start. The NIH notes that full-term babies could become low in iron by 6 to 9 months unless they eat iron-rich solid foods or drink iron-fortified formula.

Good first foods for iron: well-cooked meat blended or in soft strips, lentils, iron-fortified infant cereal, tofu. The NIH says the body absorbs iron from plant foods better when they are eaten with foods that contain vitamin C.

Fruit and vegetable purees are fine and worth offering. They just should not be the whole of it.

Purees or baby-led weaning

Both work. So does doing both, which is what most families actually end up doing.

Purees give you more control over texture and are easier to judge in the early days. Baby-led weaning means offering soft finger foods and letting your baby feed themselves from the start, which tends to be messier.

There is no need to pick a side and defend it. A family who spoon-feeds lentils and also hands over a strip of soft-cooked sweet potato is doing fine.

Allergens: earlier, and on purpose

This is the guidance that changed, and plenty of advice online is still working from the old version.

The AAP says there is no evidence that waiting past 4 to 6 months to introduce foods like eggs, dairy, soy or peanut products prevents food allergy. Research including the LEAP study shifted the guidance toward introducing them early, and for peanut in particular there is now specific NIAID guidance about doing so.

In practice:

1. Introduce one new allergen at a time, so a reaction can be traced to a single food.
2. Offer it earlier in the day, not right before bed, so you can watch.
3. Wait a few days before introducing the next one. The AAP suggests 3 to 5 days between new foods.
4. Once a food is in and tolerated, keep it in the rotation. Ask your pediatrician how often to keep offering it.

If your baby has severe eczema or an egg allergy, talk to your pediatrician before you start. The 2025 to 2030 Dietary Guidelines say these babies are at high risk for peanut allergy, and that peanut can be introduced as early as 4 to 6 months, with your pediatrician's guidance. Some will be tested or introduced to peanut under supervision. For mild to moderate eczema, the guidelines say to introduce peanut-containing foods at around 6 months. If you are unsure which group your baby is in, or there is another allergy in the family, ask first rather than after.

What to keep out

A short list, and it is worth knowing all of it:

• Honey before twelve months. The CDC warns of a risk of botulism.
• Cow's milk as a drink before twelve months. Full-fat yogurt and cheese are on the Dietary Guidelines list of first foods.
• Added salt and sugar. The AAP says fresh food cooked for a baby should have no added salt or seasoning, and to limit processed foods made for adults, which carry more salt. The CDC says infants and young children should not have added sugars. Season your own portion at the end.
• Choking hazards. Whole grapes and cherry tomatoes (quarter them lengthwise), whole nuts, popcorn, hard raw vegetables, whole beans and corn kernels, and hot dogs or sausages. The CDC keeps a fuller list of choking hazards for young children.

Learn the difference between gagging and choking before you start. An infant first aid and CPR course will show you how to tell them apart and what to do. Your pediatrician can point you to one.

Weeks two to four

The shape of this month is: the amount and variety grow slowly, at your baby's pace. The AAP suggests increasing the amount gradually.

Some days your baby will eat with enthusiasm. Some days they will refuse the food they loved yesterday. Both are common. If you are worried about how much your baby is eating, talk to your pediatrician.

Repetition without pressure helps. The Dietary Guidelines note it may take 8 to 10 exposures before a young child is willing to try a new food, so a food refused a few times is worth offering again. The AAP says not to make a baby eat if they cry or turn away.

The part that gets easier

By the end of month one, most families have stopped treating solids as an event. It becomes another thing that happens at the table while everyone else is eating, and that is a good place for it. The Dietary Guidelines encourage parents to model healthy eating.