Why have you not pruned your auto? This is important you want your light on your branches so your flower will grow structure, if you want to perk up your auto throw in a little new pearlite, flush out your plant and give a bit of fish emulsion, that usaly works, but if your auto is stuck at that stage it' probably trying to get rid of something, yes you most certainly can prune autos and should when necessary, you want your light on your branches so they can thickn, that pic is a 61 day old auto, note the branch is pruned the light is on the flower, and it has decent bud structure. SNOLEPERD