week

Hi, Im planning a clen cycle for two weeks, and then add 1mg ketotifen at week 3. How would I dose the clen at week 3? 1 20 mcg 2 20 mcg 3 40 mcg 4 40 mcg 5 40 mcg 6 60 mcg 7 60 mcg 8 60 mcg 9 80 mcg 10 80 mcg 11 100 mcg 12 100 mcg 13 120 mcg 14 120 mcg 15?