Boys need to come away from mum at about 3-4 weeks (depending on their weight) otherwise they can impregnate her or their sisters. When I have babies here I separate the boars at 3-4 weeks, and then keep them a couple of weeks until they're a good weight to go to their new homes - usually 6-8 weeks. To put my mind at rest that they're ok after weaning.
Different people vary though, so it might be different where they come from.
Bet you can't wait!
Sophie
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