CIO toddlers

I got almost 15 month old son and he hasn’t slept thru the night for more than maybe two weeks at a time. Which is on my fault with 3 moves across states and 3 different houses it was hard when or how to let him cry once he woke up at night. Not to mention strep throat and ear infections etc in between I couldn’t get myself to try the CIO. But at this point I’ve done every method out there stock w each one for days even weeks. Try them one or more months apart so he doesn’t get confused. But he has 100% exact same night routine and bed time since 3 months old. He even falls asleep by himself many nights my problem is that he wakes up EVERY NIGHT crying or wants to play I made mistake of rocking him and bringing him in our bed which worked until yesterday when he woke up at 2am he didn’t let me rock him or he didn’t want to be in our bed he just talked and played w blanket and cried for at least 1 hour before my husband held him and he slept til the morning. I’m so done waking up at night so I’m giving this chance and I need some stories or encouragement.

He has one hour nap 1-2 everyday which he does on his own w a bottle and his bed time is between 8:30-9. He always wakes up at 8am. When he wake up at night it’s around 1-2am some nights when I pick him up he’s asleep before I get to my bed. Some nights he wants bottles then sleep and lately none of those works.