how much weight should 4 month old baby have? and at what amount does baby should gain from 3 months.

A. At 4 months old, a baby typically weighs between 12 to 16 pounds (5.4 to 7.3 kg), depending on their birth weight and growth pattern. On average, babies gain about 1.5 to 2 pounds (0.68 to 0.91 kg) per month during the first six months. Therefore, from 3 months to 4 months, a baby should ideally gain around 1.5 to 2 pounds. If you're tracking your baby's growth, regular check-ups with a pediatrician can provide tailored insights.