Disrupted sleep

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For the last 2-3 weeks my daughter has been periodically waking up for 2 hours or so in the middle of the night. She’s on the young end in this group (10/31 birthday) so wondering if anyone else has gone through this? It happens once about every 3-4 days and usually when she falls asleep early.

She is teething her canine teeth and transitioning down to one nap. I figure this is part of the 18 month sleep regression, but any help is appreciated!