If nice buds start developing around the 3 1/2 to 4 week period with an 8 week flowering to harvest period and assuming that everything is going very well, when can you expect the buds to double (more or less) in size? Would it be around the 6 1/2 to 7 week period? Or do the buds just grow so slowly that a change is size is not usually noticeable? Thanks.