mine took about a week to fully come in both other pregnancies

You could also try pumping to get it flowing

babies loose some Oz when after they born. for breastmilk, I gave it (yeah) a week or so. don't be worried about his checkup. just feed and feed and then wait til next doc visit.

Mine didn't come in for 3 days after birth

mine didn't come in til days after birth

Thanks @samanthamp he was just 8lb 14oz at birth and was 8lb 1.2pz at his checkup yesterday so I was getting a little worried

nope, I was told it's a week until the milk comes in after you give birth.