hi Helen, congragulations on your little boy.

At such a young age I would say is uhappiness is probably wind. DS had it quite a bit in the first 3 mnths and when I think about it there bodies aren't use to processing any kind of food so it makes sense that it would upset them to feel their tummies full and have food move through thier systems.

I also second what Holly said about following your instincts and baby, while the MCNS can be helpful for tips always remember if what they say doesn't feel right then do what feels right. Try to remain flexible and it sounds like the extra/larger bottles are working for you.