Confused,
I'm sorry to hear that you are having such a hard time!

You say that you told your T that you were at a point in the workbook that caused you a lot of painful memories. The pace with which you work on this can only be chosen by you. Your T may have been trying to make you feel better by saying that you don't have to dive in to the hard stuff all at once to relieve some of your stress.

He sounded genuinely interested in having you stay the whole time and to schedule another appointment. I may be wrong, but it sounds like he really cares for you and wants to help

That being said, I think the comment on you waiting 5 years or so if you wanted could be summed up to: "T, What were you thinking?????"

I hope you find the strength to tell him your feelings about this. I think you would feel much better, but at the least, you would know where you stand.

Take care!