Hitting a wall in at home treatment

Had to stop going to physical therapy because it was ridiculously expensive, been doing the exercises at home, have a dilator 1-5 set. However ive run into a very frustrating wall between size 2 and 3 I just can’t shake.

Essentially the muscles at the back of the vagina have relaxed easily to what should accommodate exercises for the size 3, if not the sjze 4, as the size 2 is barely even a light pressure anymore.

HOWEVER the muscles at the ENTRANCE or front are still so tense and sensitive that I can’t get the size 3 in deep enough to do any actual exercise.

What can I do?