Toddler sleep

My little one had always been a good sleeper. Maybe waking up once per night since around 10-11 months. The last few weeks she has woken up like 3-4 times per night and will not go back to sleep unless she has milk. I’ve tried switching for water!! She does get enough to eat during the day, I don’t think that’s the problem.

We still room share but she is in her own crib. We do not have the option to have separate rooms as we are 1bdr.