Hi Claire
I have only read the past 2 pages and your first post, so please forgive me if you've already answered these questions but..
how long ago did she go to one nap? What was the reason for switching?
Is she still an independent sleeper?
Currently-what is her average wake up time in which she's up for the day?
What time is her 1st nap (if applicable) and/or only nap?
On average-what time is bedtime?
From the little bit that I've read it seems to me that this is all OT related. I'm not sure of your current routine, but IIWM (and it was this time last year!!) I would go back to 2 naps for about a week or however long it takes her to catch up before you reasses if she's actually ready for one nap.
If she's EWing and not going back to sleep, I would start her nap around 8:15 if she needs it and closer to 9am if not. There are certain biological sleep windows when the body is ready to sleep and those times are around 8:30am and 12:30/1pm. If you can get your LO to sleep in these windows, they produce the most restorative nap because you're matching the timing of sleep with the body's readiness.
Depending on the length of the nap and her mood in the late afternoon/early evening, I would also do EBT of about 3-4 hours after she wakes from the last nap.
She will likely fight it for a few days because her body clock is probably mixed up a bit, but with some consistency you can totally help her get the sleep she needs.
If you are not able to/unwilling to go back to 2 naps, then I would be starting her one nap somewhere between 12ish if she's been up since 5 ish, and closer to 1 if she's woken up later (but not later than 1pm) Then (again depending on the length/quality of that nap), I would do super early bedtime consistently for about 2 weeks or until you start to see her sleep in later in the morning.
Hang in there momma! I was totally going through this last year and it was awful (more like a black hole of depression that sucked the life out of me and my husband) but we got back on track and so can you!!
Be prepared for tons of consistency and some time for it to start working, but she's just super OT so we can fix this!
