It's funny you know I only just heard that for the first time yesterday, at an ABA meeting. DD has only just doubled her birthweight at 7 months (now 7.2kg), and her gains have really slowed down. I'm trying not to let it worry me but it does when everyone comments how tiny she is compared to all their younger bigger bubs.

Like PP have said, if the output is good and bub is happy and alert and content, then they are usually getting enough. It's hard not to worry and over analyse though, I know cause I do it myself. Sounds like you are doing a fantastic job with your lil one