In addition to choosing the right bottle for your baby's needs you also need to consider the nipple. The teats are divided into phases: phase 1 (0-3 months), phase 2 (3-6 months) and phase 3 (from 6 months). Normally your baby will let you know if he or she is ready for a phase change. A nipple works well when you put the bottle upside down and the milk drips at a regular rate.
Dr. Brown's Standard Mouth Silicone Teat AND Natural Flow is a narrow mouth silicone teat that features an internal venting system that will produce a positive pressure flow that simulates breastfeeding;
Babies will feed more comfortably and you will be able to introduce cereals into their diet, as they will be able to suckle without having to fight the negative effects of vacuum and bubble intakes.
Make it easier for your baby to eat cereal!