Sleep regression


I’m looking for some advice, I sleep trained my little girl at 6 months old and from 6 months to 9 months she has been going to sleep independently and was in a very good and structured routine, she is 10 months now, and she has learnt how to crawl and she is just about there with climbing up furniture. These past 2 weeks have been horrendous, she keeps waking up an hour after she was put to bed and then takes her forever to get back to sleep, she has been refusing her afternoon nap so she stays awake from 12pm-7pm then wakes up at 8pm and won’t go back to sleep till 12am-1am. Just wondering if she is going through sleep regression?