When and how did your child sleep through the night?

My daughter is still not sleeping through the night and is about to be 9 months old next week. She is being breastfeed 🤱🏽 all the time because she does not like bottles and since 2 months she has been eating solids.

We tried the cry it out method (one time) which did not work because she will start hyperventilating and sweating a lot and we could not do it .

I did the softer version of the cry it out method by me keep on putting her back down when she got up until she fell asleep but it only worked two times until the hyperventilating started again.

I have noticed since a couple days that I am just cranky my husband just needs to ask a question and I get annoyed or offended. I just need sleep 😴. I can’t do it much longer.

Some nights my husband goes into another room because I bring her into our bed because I don’t have the energy to keep on waking up and putting her back in her bed, since it is a struggle at night.

We were co-sleeping for the first 6 months but even before that she always woke up so much (not counting the first few months)

Please can someone give me a tip.