Hi @alexaishername I know you haven’t asked for solutions but just wanted to share our experience as it might be helpful to you. We breastfeed and co-sleep.
DS is 20 months now but until about 13/14 months I would have considered anything below 5 wakes as an exceptionally good night. Nights of hourly wakes were not at all unusual, and occasionally he would wake up upset but not to the degree you describe - although as others have suggested, what you are experiencing could be in the realms of normal.
We moved him into his own room at around 15 month, but until 18ish months he was almost always in our bed from 11pm so only did evening in his room.
Now, he makes his way to our room somewhere between 2-5am and spends the rest of the night in with us.
We went with a floor bed when we moved him to his room so it was easy to lay with him and feed to sleep. Now he is in a normal single bed which works too, ideal as he has the freedom to com to us when he wakes or I can go and sleep in with him if I prefer.
We started waking him at the same time every day, no matter what. We also capped his nap at 1hr and waited for him to show tired signs before putting him to bed, after a few days we were putting him to bed at around 8-8.30pm this was when he was seeming tired.
Capping his nap and putting him to bed a bit later is what seemed to dramatically reduce night wakes. We went from 5-8 wakes to 2-3 wakes within a week. Obviously this could have been coincidence.
We have also started giving a good quality multivitamin and omega 3, he has a good diet but I had read that vitamin deficiency can impact sleep - unsure of how true this is but thought it can’t hurt.
We also use a cream with magnesium in before bed - don’t use much, just a little foot massage but we notice he is much more fidgety and wakes more if we have skipped it.
Sorry for the long post and giving you solutions when you didn’t ask for them but these were very stress free changes for us, after lots of stressful changes that hadn’t worked, it has been nice to start worrying less about sleep but we do feel these tweaks have showed improvement.
Hope things start to improve soon, well done for keeping up with supporting your little one in they ways he needs, sleep deprivation is killer but it does get better.