
Hi, the pups probably have taken in some anesthetic, so maybe not sucking so well as they should.
I have checked my records and my pups usually only gain from day 3, they seem to stay the same the day after
birth and then start to gain, but I have never had a c- section so can't really advise if there is a difference. They seem to average between half a pound and a pound a day, they are toy size too.
I wouldn't supplement them If at all possible though as they need to suck to make more milk and as she is feeding them it seems a shame not to let her get on with it.
Good luck with your pups.
Liz