I had this same problem with my little one. What I needed up doing, was buying those liquid squeezable crystal light and putting a few drops in there. Makes her taste alittle bit but she still gets her water in take.

I always water her juice down but like if I just give her plain water she doesn't want it ☹️ @kkmamax2 she has maybe 1 or sometimes 2 sippy cups of milk

Have you tired to mix them? Toddlers should only have 4 oz of juice a day. So what I do is, 1 oz of juice and the rest water. I don't that 4 times a day and when those 4 oz are done, I only give them water but with my youngest I put a lot of ice in it and she'll drink it like that. And I also make sure they drink at least 1 cup of milk.