Also in the past she would sleep later in the morning as we pushed her morning nap later....to the point it was at 11 to get her to sleep to 7. If that same principle holds true...wouldn't I need her to take her am nap later than 10:30 esp. when she isn't sick/teething etc. and can handle the long A times again (which she can do 5 hrs. normally) b/c otherwise it will reinforce her early wake time???
I think this is mostly a factor when you are putting LO to bed too early in the mornings and letting them sleep as long as they want. Then they start waking early to get that extra A time - but putting her down and then waking her at 30 minutes isn't as likely to do that as she's not getting a full sleep. Does that make sense?
I guess basically my question is...after we get past these NWs from OT....how do I get her to sleep until 7 am again?

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IN my experience it happens on it's own as LO gets more well rested. We have just recovered from a spell of it here, and really, it just took a few days of DS getting his good daytime sleeps in, back to his normal bedtime, and he started waking at his regular time (around 7). I was surpised at how much extra sleep it took in the days and a couple of nights in a row to get him back on track - I hadn't realised just HOW tired he got from a few days.
Looking at your routine, I wonder if 2pm might even be a bit too late to put her down for the afternoon. My thinking is this -- the amount of A time she has from her wake up until her first nap (4ish hours?) is a "full" awake time, but 30 minutes for her nap is very low, not even one full sleep cycle. So she's not resting enough to make up for how tired she was. Which means that she will start out her A time still tired, and 3.5 hours may be too long for her - at least during this time period of OT and trying to break it. Perhaps when she is not in an OT cycle it may be fine, but you want to keep her from getting too tired at all during the day. Am I making sense?
So I would either move her nap to no later than 2pm and see what happens. OR, I would let her have a 45 minute nap in the mornings for one or two days so that she rests fully, and then aim for a 3.5ish hour A time and adjust accordingly. Neither of things may work regularly for her, but when she is in an OT cycle, reducing A times often really helps to catch up on sleep.
HTH?