Personally, I do believe you can use it this way. The fact that you have experience, and a T that you trust, gives more credence to the idea. I used hypnosis to help me have 2 natural childbirths. (No, the fact that the spouse didn't give a whip about helping didn't help it be totally sucessful lol)

I also used hypnosis years ago when seeing my dentist (in fact, he is the one who "taught" me indepth how to use it.) I couldn't use the anesthesia available at that time.

good wishes!