My 15 months old hasn’t slept through the night since 10 months old. HELP

My 15 month old was a great sleeper when she was little up until 8 months old, at 9 months we did the cry out method and within 3 days she was sleeping normally. That lasted for about a month and then she started wAking up at night from what I think was teething pain. She now wakes up every night at 4am. I have tried lettinf her cry it out again but she’ll go 2 hours and at that point I can’t let her cry any longer. I am starting to get really emotional and my husband wants to let her cry it out no matter how long she goes now and I can’t do it. To put her to bed at night she lays down we give her a kiss and we leave (she falls asleep on her own). At night when she wakes up (at 4) I go in there pick her up give her a sippy cup with milk and Tylenol (when I think she needs it) and lay her back down and she’ll go back to sleep kind of quietly within 20 min or so. She also sweats at night pretty bad and is an EXTREMELY light sleeper. I want to wait until shes 2 and can talk and understand me and handle it then and for now just wake up with her but my husband really disagrees because around March we want to try for another baby and he thinks having 2 of them at once will really complicate the situation (he’s not wrong). I really don’t know what to do. I’m so lost. Please advice. 😭