Don't do it, man, otherwise it will fuck up your induction. You'll have to wait the full time all over again.
This part sucks, trust me I know.. but just remind yourself that you only have to do it once. Do it right, suffer a little bit now for a short period of time, knowing that soon you'll be fine once you start and stabilize on the bupe. But, if you don't follow through and induct properly by taking an opiate in between and not waiting long enough, it's not going to work and you're going to keep feeling like shit, while it also becomes harder and harder to make the transition.
So just do it now, man. I know it blows, but it will be over soon. It wont be though if you give in and take an opiate. You'll have to start all over again and all the suffering thus far will have been for nothing.