Sleep regression at 2 1/2?

K

My daughter turned 2 1/2 earlier this week but the past month or so she’s been sleeping real poorly. She’ll wake up in the middle of the night and be up for 3-4 hours. It happens once or twice a week. She still takes a nap during the day usually no later than 3pm. She’s is bed asleep by 9am and when she sleeps she’ll sleep a solid 10-11 hours. She sleeps in her own room with a night light, fan on for noise and the door cracked.