My near 6mo is having trouble going back to sleep. The pattern that works best for her is to put her down by 9:30, she’ll wake between 3 and 5 for a night feed, and go back down until 8/9. It used to be a fluke, but lately she’s refusing to go back down after her feed and staying up 1-1.5 hours, even with the usual routine! She never has trouble transitioning cycles, but can’t put herself back to sleep even with help now. Anyone have any experience with this?!