Did anyone have their training just stop working after three weeks? LO is almost a year and we finally sleep trained around 11 months. She was doing great for there weeks but all of a sudden the last few nights is waking constantly and crying much longer than she had before. She sits up and won't lay down, even though she is very good at laying down during the day. She will finally fall asleep kind of slumped over, but I assume that isn't comfortable and she wakes again frequently. Laying her down doesn't seem to work anymore. We've given meds for teething although she doesn't seem like she's teething.

Any help or similar experience? These last night's have been worse than the initial training and we are just stumped!