Baby won’t take bottle! Help!!

I’m at my wits end. I made a really hugeeeee mistake. I was breastfeeding as well as giving my 4mo baby the bottle so someone else could feed him while I run errands. It was great, he took the bottle, I could catch up with friends without him, etc. My biggest mistake - I stopped feeding him the bottle.

I stopped for like 3 weeks and then started trying again a couple of days ago. Let me tell you, he was not having it. Lips tightly shut, pushing the bottle out of his mouth. I tried to get my hubby to feed him, didn’t work, tried to give him the bottle when he was hungry, didn’t work and made him fussier, tried giving it after a breastfeed, didn’t work. I’m back to square one and can no longer leave him while I go out because he will cry hysterically and only wants the boob. Anyone, please help!!!