dude i would just leave em 2 do wat there gona do without messin wif em,,,do sum research on fimming and topping,,topping is taking off the newest growth at very top ov plant which if done right will giv u 2 main colas,,,fimming is wat i do and u cut off about 75% of the same top growth which will make 4 new bud sites,,,i fimmed my critical mass plant and she grew an identical twin of herself attached 2 stem and she is going sick ,she has at least 6 excellent tops about 15" colas each 1 ,, but sum strains react different to topng or fimming,,,leave out cropping till u know more about wat ur doing,,wen u top u dnt necessarily get more bud ,,u just get more tops which will be smaller thn 1 main 1 good luck tho m8 .stick with the forums nd u will learn plenty