Are you heating the colonies? Seems kind of late to start hibernating to me, but I suppose you could.
They're probably already in diapause, since they've been less active the past month and I only recently cleaned the glass to see they've stopped laying eggs. Also, yes I was heating them. I feel really stupid right now because they're so sluggish right now, they're almost certainly in diapause, so I took them off heat for now. I guess I'll wait a few weeks to see if their activity increases.