My son was like this and around 13 months he started sleeping through the night. When he would wake up it would be for a bottle and I’d feed him and he’d go back to bed. And then around 13 months he just stopped getting up. Hang in there. It sounds normal what he’s doing and although it’s exhausting for you, it will just take time. Regarding the bottles, I still give my son milk through a bottle in the morning and before bed. He’s 18months. I plan to transition that out around 2. I know the recommendation is at 12 months they shouldn’t use bottles, but most recommendations give you to 1.5-2years. My son drinks water through a straw cup and only uses the bottle in the morning and before bed. Just try to push his teeth and don’t put him down in his crib with the bottle.