4m sleep regression at 3m…?

My 3m old has been a great sleeper since 6w. Legit 6-9 hour stretches at night (good weight gain it’s fine). As soon as 3m hit he’s starting to refuse his nighttime breastmilk bottle, and only wanting boob. He would always get a bottle at night great but now he’s like NOPE. We do this so I pump and not engorged in the morning so bad.

Now he’s waking up throughout the night (not terrible in comparison to other baby’s but still different from his usual. And specifically takes 3 hours now to put to bed, crying all three hours. Couple questions

1. He is a very large baby, born 99th percentile, currently wears 9-12m clothing. Could his sleep regression be happening a month early cause of his size?

2. How do I get him to take night time bottle? It’s hard on me to do night time feed with nursing. A bottle is important to us at that time. And he’s just hysterical around it, and dad at night. I tried yesterday for a couple daytime bottles and he took it great.

3. Anyway to start getting him to bed earlier? I start work up soon and have 5am wakeup. So him going to bed at midnight will be rough on him but he fights it so bad for hours.

Thank you all for help, please no hate but please give advice or critiques. This forum can get judgy just remember all babies are different and we are just trying our best out here lol