Why is my baby suddenly waking up every 3 hours during the night at 10 weeks :/

La

My baby has never woken up more then twice during the night since she was born & is now 10 weeks. We’ve had a bedtime routine since she was 6 weeks & we are still doing the same thing..she usually goes to bed at 7, wakes around 3 & then 7 she is up for the day but the last 2 nights she seems really unsettled & keeps wanting feeding every 2-3 hours. Im exhausted 😫. Could this be a growth spurt?!