Well, weaning doesn't mean they just wake up one day and go onto solid food and water. They kinda take a week or two to transfer over to eating only solids, so you should see them eating and drinking and nursing all in the same day if you were to watch the whole day. Over this time period they would start wandering away from the nest some too (if they had space to) and exploring, even relocating to new nest sites. So the fact that they're drinking water is good, it means they're on course to wean, but it doesn't mean they're not nursing any more. Moms will nurse up to 8 weeks old (but they usually stop around 4-5 weeks). I actually had a mom nursing at 7 weeks recently and it was pretty crazy to see five, huge seven week olds under this one little doe I have.