I'd be more apt to do the IOP you've mentioned than this setup, but I wonder if you can't honestly discuss with your T the financial hardship and come up with some other options to try before you get into debt over this. For example, I know your T is not able to do the work he thinks you need; could you find another local T who might be able to see you two or three times a week and thus do something that's more intense than weekly therapy but not as expensive as the other options?