For those with a WAS...How do you cope?

[Gardener]

Courts,

3-5 beers a night does not make him drunk, but I still see it as a dependence and I don't like it.

He may not be drunk, but you can be assured he is buzzed (i.e., self-medicating) and impaired even if only slightly - and slightly is too much in your daughter's presence

IDK...Is a few beers a night okay, not okay?

Lemme see...that would be a few beers (3 - 5) a night- every night of his life? I would say that's not okay. I was there, Never drunk. Just buzzed. Every night. Not good.

Do I just ask him to not drink when he's here?

Set a boundary: No drinking in your house, when with DD, no even coming in smelling like it. You could even forego your light "drinks" a couple of times a month until you go out somewhere and tell him it is now an alcohol-free house. Period. Your call.
Keep going.