10 mo old sleep schedule from hell 😩

So my ten month old girl Penelope has had a pretty great sleep schedule from about 3mo-8/9mo old, she would be in her crib around 8/9pm for 8-12 hours straight every night. Around 9 months she started waking up every few hours which was a frustrating change, but I assumed since she was teething pretty bad again that it had to do with that and a possible growth spurt (she mostly would nurse herself back to sleep and go right back down). But now that she’s 4 days from being 10 months she’s been waking every few hours just the same but by the second or third wake up anywhere from 1-3am she’s been wide awake and won’t go back down for an hour to three hours depending on the night..which is complete torture for many reasons lol..but she stays up for that period of time then falls back asleep until 8/8:30am when she wakes up for the day like usual. I’m not sure if it’s developmental or something I’m doing wrong, but I could use any advice or your experience with this if anyone has dealt with the same thing.