My 14mo dropped to one nap when she was 12mo. Her daily routine is awake at 7am, nap from 12-2:45, and bedtime at 7pm. For the past four days, she has been waking from her nap after only one hour of sleep. I've tried leaving her in the crib to see if she will settle herself to sleep again, but she never does. Is she having a sleep regression? Is she starting to transition to NO nap? Ive tried making her nap 15mins earlier, and 15mins later, and each time she only sleeps for an hour. Any insight as to why she is doing so? Thanks in advance!