I get nervous if mine are fed every 6-8 hrs....he *needs* milk.
BUT...sometimes if you try too often, they get aggravated and refuse to eat...maybe try again this morning after he's had a chance to get good and hungry. Make sure the milk is warm / not too warm.
I don't like / recommend replacer...cow milk works best, IMHO. (and I raise a lot of bottle babies...)
If he still won't eat this morning, you may have to either tube feed him or take him back to her / let HER get him changed over to taking the bottle WELL and tell her you'll be back when he's converted.
hw drank milk and water out of bowls today once we got a nopple that attaches to a bottle a black one he took right to it he had a little time with the tounge and getting it in the right place but he dranked about 4 to 5 ounces then decided he wanted to play. he is a polled buck and when he gets older we are having him castrated. ty she has enjoyed him so much she did not want to go to bed