My baby is 3.5 months old and suddenly started refusing to take a bottle when he was a little shy of 3 months old. He had been doing fine transitioning between bottle and breast since he was 3 weeks old, so this is weird to me! I'm not working outside of the home, so it's not as huge of a deal as if I were leaving to go to work every day. With that said, it is nice to be able to give him a bottle if my husband and I decide to go on a date night or I have to run some errands.
Anyone else experience something like this and have some tips? He had been doing well with the Dr. Browns bottles; I'm not sure if I should try a different brand. Now when anyone tries to give him the bottle, he just rubs his gums on the nipple and becomes "hangry" (lol) until I show up to feed him. About a week ago, he took part of his bottle while my mom was watching him for a bit, so it seems to me that he simply prefers the breast, not that he has somehow "forgotten" how to eat from a bottle.
He goes to the doctor again in about two weeks, so I plan on bringing it up when we are there. He's eating well otherwise and it's certainly not the end of the world if he doesn't want the bottle, but maybe one of you has a magic trick that could help us out.

*Edited to delete typo
Re: Baby started refusing the bottle at about 3 months: any tips?
-Be consistent, but not pushy or stressed about the bottle. I don't see a reason to switch bottles.
- Giving only an oz at a time as not to waste BM. I would leave the room for a while when DH have a 'practice' bottle and finish the feeding on the breast.
- Running the nipple under hot water right before giving him the bottle. This was the game changer for us. Even at 10 months old, if someone didn't do this he would refuse.
DS is now off bottles, since he never really took to them well. So we had to introduce a straw cup around 6 months when he was refusing.
Good luck!