no mother?

How can i run a grow with no mother..if i take clones from the veging group than send them into bud i would have to veg the clones till the original batch was finished but i only want to veg for thirty days but im limited on lighting for the bud room so i cant just stick em with the others witch would still haves a month left

so the answer is very simple: pick one of the clones and run it like a mother... keep it under 24hrs light in a separate area. or keep reveg one of the flowering ones (though i don't recommend that, it really can stress the little bugger out)... keep it with all the ones in veg, and just don't put it to flower, right? no worries...