Alot of what i am about to say was learned from B.R both directly and indirectly anyway.. but here is what i can add.
I know that with suppression caused by androgen/estrogen levels (negative feedback) that FULL suppression is around the 3 week mark - now i cannot for the life of me remember which goes first and which later.. if it is one of the hormones of the hypothalamus or pituitary.. i know Bill Roberts will know as it was him i heard it from..
I will add that in my experience of a number of different Nandrolones, that Organon Deca was by far the best and if you can get the real stuff i suggest you save up and do upto 400mg/wk of the stuff
I too also believe that higher doses over a shorter time are better, as i know BBB, lillguy, cortes and many other respected posters here do also at the moment..
I think that it would be better to use 1g over 6 weeks (6g), or 750mg over 8 weeks (6g) than 500mg over 12 weeks (6g) - Suppression is a MUST for any steroid assisted gains, it is just a question of how long.
Avoiding suppression is like avoiding max gains - i know YOU aren't trying to, but there are many kids reading this planning on their 25mg/d winstrol or 20mg/d var run for next summer..