1. nothing to worry about. you may loose a baby or two, but there is nothing you can do about that. Normally you won't loose any.

2. You can wean as soon as their eyes are open. they will still look very small and helpless, but trust me they aren't. keep in mind as soon as their eyes are open, mom will usually be just a couple days away from popping again. I think it is very important to wean them as soon as you can for the moms sake.

3. I recommend separating the sexes when you wean them. there are some people that don't. the reason I separate is that there is less fighting among the kids as they get to the reproductive age... and it is also 1,000 times easier when you have to go into the grow out tubs to pick out a new breeding group. You know the females are virgins, and not already pregnant from another man. If they are pregnant from another man, just like humans, it causes all kinds of drama in the house when they are born!