Sleep training help!! [on]

I understand I’m in a bad routine but want to fix it. I’m hoping to not just do the cry it out method but I’m open to any ideas. How did you sleep train your child??

Background:
My son is almost 11 months. His routine is get up around 8-8:30 AM and go for a nap around 10 AM (in car) for about 1.5-2 hours. Then another around 2-2:30 for an hour or 1.5 hours (in car). Then another nap around 5 (but skips some days, also in car) for about 45 minutes. Then again at 7:30-8:30 (in car). I’m a single mom and go to my parents every day which is an hour away. Then bed time around 9:30-11 PM. I give bottle and then rock for 5-10 minutes after settling. He wakes anywhere from 2-5 times a night. Mostly wants to bottle feed to go back to sleep but trying to cut that.

I know I need to cut car naps and night feeds. Please help because this momma is tired and needs a whole night sleep! Please no judgement, I’m aware I’m in a bad routine. I’m willing to put the work in because this momma is tired.