Night time sleeping-tired mama 😴

Okay just looking for some thoughts on getting your little one to sleep through the night? My oldest daughter just turned three and I have to lay next to her until she passes out.. she’s usually in my bed because If she sleeps in her own bed most of the time she wakes up at least once when she noticed someone isn’t their.. which is my doing because she’s pretty much been in my bed since a baby. So my problem is that my 8 month old usually sleeps in her own bed(we really didn’t want to have to break another child of bed-sharing, even though I do love it sometimes.. they get big sooo quick and I love snuggling at night! ) anyways she’s been up sooo much lately at night 2-4 times a night.. and I was soo tired and just not functioning well as a mother during the day!! so a few times I brought her in bed, she was still waking up but it was definitely easier.. but I don’t want to break her good habits of being able to sleep in her own space.. so we did the cry out method one night 😭 I still feel bad about it but I also want her to be able to self soothe! I’m just not sure what to do at this point and I know this is a topic that everyone has different opinions on! I just would love to hear some thoughts or advice on how you handle your little knee and sleep!! Thanks so much!!