There is no need to taper. That is an old school method, that has proven to be unneeded. I would pick a dose and stick with it. 50 to100mg is standard dosing for var. I would stick with about 50-60mg ED, for 6 wks. This cycle is not a waste of time, but anavar will not do the same thing as test, supporting your test levels. So test levels will get low with time. A lot of people, including myself, suggest using test as a base for your cycles, not because its only better, but it will also support your body's normal functions. A good plan for var would look like this :
1-12
Test E 250-500mg EW
adex .5 to 1mg EOD
7-12
Anavar 50mg ED
Then PCT with Nolvadex or Clomid 2 wks after last shot