Weanling question

[deschutes dawn]

For those of you who have raised their own kids, how long will it take away from mom before I can put them back in the same pen and have them leave her alone? I have limited space and I need the weanling pen for the bucklings. That leaves 4 doelings to keep away from does and the baby bucks who are already harassing them.
I am selling 3 adult does as soon as babies are weaned so that will solve some of the problem.