How long have you been flowering for? You can see buds start about 1-2 weeks after you start to flower. Usualy you see hairs first during flowering and then it bushes out.
If white hairs have just started to show then you have another 5-7 weeks of budding and about 3 weeks or so until you see some decent buds, all depending on your setup, strain, and of coarse when you started flowering
