Hello Brian, I understand. I was a bit nervous, too -- the first time I was taking another guy through the Steps. Here is what I would do:
1. To be "on Step 5"... is a really dangerous place to be for an alkie. If they wait, delay, or hold back something that needs to be shared -- our book says they will drink again, and that for them to drink again, they will die. This is why it's not a good idea to be on this Step for very long at all!
2. I'm assuming, that you've already done your 5th Step. If you haven't done it, then you should speak to your sponsor right away about this. If you did do it -- and it worked for you, and you've stayed sober for a while and got through the other 7 steps, and you are reasonably sane and happy while sober -- then, just do precisely what your sponsor did with you, and you'll be alright.
3. In either case, above... it's always best to re-read the instructions for Step 5, in the Big Book. I suggest staying away from the 12 & 12. It will confuse you and the new guy and it won't offer any lasting help, in regards to taking the Steps. The 12 & 12 is a book for those that "think about" taking the Steps -- and the BB is for those that "DO" take the Steps.
Re-read those instructions in the BB, and then ask if there is anything that isn't crystal clear to you.
I make it a practice, to personally go through the Steps again, each time I take a new person through the Steps. It keeps me tuned up and so far, it seems to be helping me stay sober.