That does sounds like lots of daytime sleep and a short middle A time for her age. That MOTN thing sounds like UT to me. I would bump her A times a bit, maybe compress the AM nap to get the PM nap when you want it.
By way of example, my LO just turned 11 months and today, shock horror, has completely refused AM nap, done a really good (2.75 hour) nap after a 4.30 hours A time. So looks like we're on one nap today as she only woke at 13.45 and there's no way I can get a CN in. EEEK! But I think mine is on the high end of A times.
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