Do you have to slin for 4 weeks at a time? Can you do smaller cylces w/higher dosages like humalog 2 x a day, 10 iu's morning and 10iu's PWO for 2 weeks on 2 weeks off? I too noticed that after about week 2-3 on humalog 2x a day the gains slowed down. I think the bulk of the gains on humalog are made in the first couple of weeks.