You dont need to taper down Clen...
There's no benefit from tapering down.
Why do onlu use it for two weeks?
If you wont to do the "2 week on - 2 week off - etc "cycle just go with 2 tabs week 1
3 tabs week 2
off week 3 & 4
3 tabs week 5
4 tabs week 6
off week 7 & 8
4 tabs week 9
5 tabs week 10
etc...
....
good luck!