I definitely think having your husband there will help. When I've had them, I had a friend go with me. I squeezed their hand the whole time (and dragged them half in with me, lol, because it went in further than they could hardly reach. The lady positioned friend so their hand could be with mine and be out of the way. I think friend was very uncomfortable and stretched out (so warn husband, lol), but thankfully willing to do that for me.

I could not put a washcloth over my face either. Too many triggers. What I did was focus on the lightness outside the tunnel and kept my eyes focused no matter what (I think I dissociated through it though because it went a lot faster than they said it would). And held on tight to friend's hand. Friend also talked to me during it and while it sounded like it was from inside a tunnel (lol, I guess it was); it helped hearing their voice.

I don't remember a lot about the procedure but I do remember some part inside singing children's songs.

I know it's scary but I hope you will go ahead and get it done treehouse. Your brain will get you through it.