Wyatt is now 6.5 months old and his jaw has grown out quite a bit so that he is able to suck if he has a large slit in the haberman feeder nipple. The problem is when you put a large slit in a haberman, the chamber doesn't fill up and then you have to stop him from drinking to fill it and he gets upset.
So I tried the Y nipple and Dr Browns bottles today. I still had to make the "y" larger, but it worked like a charm. No more having to stop Wyatt from eating to fill a chamber. Plus, anyone can feed him without being nervous. I am so happy!!!