Don't really know why I'm posting, except I only have DH in real life to talk to.
DD2 is 7 weeks, EBF. She gained weight well in the first 4 weeks, back to birth weight in 10 days and following 25th centile. Then last week at her 6 week check she'd gained weight but dropped to 0.4th centile, having only gained 6oz. I have good supply, and forceful let down so was told to express off a small amount before each feed to ensure she's getting enough of the "fattier" milk. When I express the first bit is basically water then it becomes more milk like so this makes sense. She feeds 1.5-2.5 hours during the day and 3-4 hours at night. If I try to wake her at night to feed her more frequently she just gets pissed off and refuses to feed.
However, a week later and she's only gained 20g! Following the 0.4th centile though. So now I've been told to top up with expressed milk every 3 hours.
What am I doing wrong? Its definitely not a supply problem. Is this just a slippery slope to formula?