Need help on what to do. At our wits ends.

18 month old, never officially sleep trained. Held to sleep for all naps/bedtime , then placed in crib once asleep. She still had night wakes every once in a while calling for mom and I would tend to her. As she’s gotten older ~14 months she’s been able to self soothe a little more. But with teething/regressions seemingly lining up back to back,and a baby on the way, we need to make a change. Her WW are currently 6/5 ish, wake at 630 normally, bedtime 7-7:30 depending.

She is a very clingy girl, was never able to place in crib. Idk how to go about having this girl sleep through the night and independently go back to sleep. I’ve looked up most methods but now that shes 18 months, they seem to be hard to do because of her awareness.

Please send help