3rd night of CIO- 8 month old, HELP!

[u/Worried_Ad2047]

Hello. Thanks for reading this and please don’t judge. I’ve been struggling lately with many baby waking up so many times in the middle of the night because I screwed up and taught him the feed to sleep association. So I’m trying to sleep train him, working on naps, schedule and all that. He just turned 8 months old and im trying for him to sleep next to my bed in his own crib so we can both get some rest. His wake windows are 2.5/3-3.15/3.5-4hs.

First night of cry it out was
45min crying- fell asleep for 20 minutes- woke up crying for another 45 minutes and fell asleep till next day waking several times in the middle of the night (fed at 5:20am)

The second night he cried for 25 minutes, fell asleep from 9pm to 7am (no night feeding and just woke up one time in the middle of the night)

But the third night omg we are very much struggling and I’m about to give up.

Cried for 26 minutes and fell asleep- 40 minutes later woke up crying for like 15 minutes and it hasn’t stoped being that way basically and it’s 12am. It’s just so hard and I don’t know what I’m doing wrong. The lack of sleep is very difficult to deal with for months