Hi, just had baby no3 (10 days ago) and formula feed :
Yes, milk comes in, its very sore, lasts a while, a bit leaky then stops as its not being used.
I use ready made cartons when I'm out and about, but she usually sleeps when out in the pram.
I ff on demand and have no need to give her water yet.
By the way re info on formula, making up bottles correctly etc, before I left the hospital, the midwife came round and talked to all those formula feeding and double checked we all knew what we were doing re change in advice etc, gave out leaflets. The community midwife also did the same. Today was my 1st Health Visitor visit, she also walked/talked me through the bottlemaking, had lots of info and the same leaflet again. She had a tick sheet, she was working through to make sure she had covered everything.