If you breast-feed your child, watch how your own diet affects your child's behavior. For example, does your child have gas or cry more after you have eaten certain foods? The medicines you take can pass in your breast milk to your child and affect him or her. If you smoke cigarettes or chew tobacco, the nicotine can pass through your breast milk and may make your child fussy or irritable.
Make sure your child is getting enough to eat but is not overfed. Make sure the nipple opening of the bottle is not too large or too small.
If your baby gulps during bottle feedings, the nipple hole may be too large, causing your baby to swallow air when sucking.
If your baby struggles with the bottle during feedings, the nipple hole may be too small, causing air to be swallowed when sucking. When a baby struggles for nourishment, he or she may become frustrated and may even stop eating before being satisfied.
Burp your child often during feedings. Adding solid foods to your baby's diet at a young age (unless you have been told to do so by your doctor) may cause problems. Solid foods are harder for a young child to digest and may cause a food intolerance. This might make you think your baby has a food allergy when he or she does not. You may be able to avoid some food intolerances if you wait to add solid foods until your baby is 6 months old.
Make sure your child's sucking needs are satisfied. Sucking can help a child relieve stress without crying. Some young children need to suck as much as 2 hours a day. If feedings are not enough to satisfy sucking, use a pacifier.
If you think the formula may be the problem, talk to your child's doctor before changing formulas or brands of formulas.