you don't have to double it, you just have to take more often in order to take advantage of the shorter estered test,test prop has a half life of 4.5 days, but works best when inj. EOD, I've done it every 3rd day and been fine. Since you're doing the tren EOD just throw in 1/2 ml of omna w/ it and you'll be fine. ED pokes of tren aren't worth the hassle IMO. Be patient, once eveything gets flowing you'll be very happy....