Standard for nolva as a solo pct without hcg or clomid I would say is 40,40,20,20
When combined with clomid 20,20,10,10 alongside the clomid
Some guys like lower dose longer pct that might go 20,20,10,10,10,10
With all that being said, there's absolutely no reason I see for people to taper down there serm use. If I were you I would take 20mg a day for 4 weeks, and then If I felt good I would wait about 2 more weeks and get bloodwork done to check the numbers vs. how I was feeling