Also growing Somango XXL outdoor (3 plants) so keen to follow your progress. My two bigger XXL's are 8 weeks into veg & stretching big time. They love topping & some LST & will keep you busy defoliating in your grow. Current heights of my 2 biggies are around 20" but with topping & LST is not a true reflection on growth. Big & bushy with big fan leaves. Good luck mate 👍🏻