Please advice - Top/front of the foreskin is tighter

My phimosis treatment has just started 3 weeks back. I can retract in flaccid using warm water but otherwise i cannot even retract more than 20% in the first try. I have become aware about the rings option and also lateral stretching of the foreskin but haven’t used it. Now what i am seeing is the front/top of penis foreskin (opposite side of frenulum part) is sticking more to the glans as compared to the left and right part of the penis foreskin which makes me think how will i be able to use rings as i don’t feel i have space to enter my finger under the foreskin (top part of penis which we see when look down). This is along with hypersensitivity of glans (more sensitivity near urethral opening)