Cows milk at night

Moved LO onto cows milk at night as well as morning bottle But she seems to be waking in the night now for a bottle as well. Never really did before. Not sure if we’ve moved her night bottle over too soon? She eats loads during day and a meal with fruit and pudding at 5/5.30pm Then cows milk bottle at 6.30/7pm. Do we put her back onto follow on formula at night? Just feels like we are going backwards. Not sure what’s best to do?? Anyone experiencing this?