Rain this is exactly what happened to us. 11.4% at first weigh in- a total shock! How do you know what your boob is doing. We went to waking LO every 3 hours, fed from one boob and syringes expressed from the other, poor boobs really struggled. I was only able to get 15ml per feed. Emergency pre mixed formula was bought (but only used it when I was totally dry, maybe 50ml in total). We Often spent an hour trying to wake LO, stripping, blowing, putting LO cold surfaces- felt like child abuse. Google- there are lots of threads with ideas to wake sleepy babies.
Second weigh in he has gained only 50g in 48 hours. Similar conversation threats from midwife.
We were told to go to two hour feeds and to ditch syringes for bottles as we should be on 30ml per feed. I explained my boobs weren't keeping up. Midwife was like 'bothered'. I was distraught.
Thank fully expressing paid off and my volumes finally increased a little. LO has was able to swop between bottle and boob and doesn't seem to have nipple confusion.
Third weigh in he increased by 200g to 4.8%!! We were lucky. I've since found out some close friends had the same sleepy baby with lack of milk, it took them two weeks of weigh in's before midwifes were happy with weight. Bless 'em.
I nearly gave up several times, I'm glad I stuck with it Rain. However everyone is different, you know you and your baby best, you do what you feel right. We were lucky, I think if he hadn't gained on that third weigh in I would have swopped to formula, I just knew I'd given my best shot.
Good luck Rain, let me know how you get on xxx