scrog is the way to go. you can control the height exactly! see

btw the pic without buds is just under 2weeks 12/12 and they are just begining to "crown off" it's 1 bagseed and 1 gypsys kiss

there isn't any strain that will flower in 1 month. imo it's a waste of time/energy to cut a plant at 30 days. why grow if you don't have the patience to do it right?