Kristi right,.... I think you already know out of the 7 I've intro'ed, I've never waited the entire 30 days. Some get real close...3 - 3 1/2 wks. but I've never been able to hold out for 30 days.
I do however make sure they have a vet visit and clean fecal under their belt before I even consider it, but it's really hard when you have a cage of X amt. of gliders then a lone one sitting their watching all the fun and not being able to participate. Always brings visions of the lonely child sitting on the playground watching the other kids play but not being able to take part.
I just don't have the heart to keep them apart.
IMO, if male is neutered, all fecals are clear and everyone is healthy... then I say go for it if you feel it's the right time.