STTN for 2 month old?

LO just turned 2 months. Her last feed is at 9.30pm. She slept at 10.45pm. She doesn't wake up, we would disturb her at around 2.45am. We are concerned if we don't wake her up, it will be too long between feeds. Is it OK to wake her up or we wait for her cue? #advicepls