It’s your first job as a parent, and the most basic: how to feed your baby. Here’s advice on everything you need to know to give your little one a healthy start in life.

Use this guide to see what and how much to feed your baby at every stage of development from birth to 12 months.

Introducing your baby to solid foods can be an anxiety-inducing experience. Parents may be unsure about what to feed their baby, how to feed them or how to deal with allergies and choking hazards.

Homemade formulas can result in a baby not getting the right nutrition or having the ratio of their electrolytes disrupted, which can be dangerous, Altmann said.