Night time bottles

AC

My son breastfed until 14 months. I got pregnant and had serious breastfeeding aversion so I stopped and gave him formula for his bedtimes. Now at 2 years he still needs a bottle at bedtime. I’m not sure how to wean him from this. He’s at a point where he needs a bottle every-time he wakes in the night to help him go back to sleep. I don’t know what to do, or how to wean him from this. Any advice from you mamas?

I’d like to add that he naps at day care without a bottle, but if he has a day off, he needs it for his nap here at home… it seems like he just maybe expects it from us, and we’ve made him used to it.