How much should a hamster drink a day

[Lemon]

Idk if I’m being a paranoid hamster parent but I think my Cow has been drinking a lot

I caught her drinking from her bottle 4 times in one night within about 3 hours. She doesn’t stay at the bottle a very long time, maybe like 5-20 seconds each time. She’s also running on her wheel a lot at night, so maybe she’s thirsty from running. Also she never wakes up to drink water during the daytime. Only night.

She’s eating and playing just fine. She is full of energy

Her bottle isn’t obstructed I don’t think. I give it a test squeeze several times a day