Phimosis along with PIED

Hi guys, I guess I am partially cured but need your inputs as I am not sure how to take this forward. Let me start with my background.

I am 30 years old healthy guy from one of the Asian countries where Sex before marriage is still considered taboo.
I started masturbating when I was 17 with the frequency of 2 to 3 times in a week and I used to edge for not more than an hour and never watched porn. When I turned 23, I started chatting online or watch erotic softcore movie and I edge for 4 hours. This edging session will be completed by orgasm through porn and I edge for half an hour to 45 minutes to porn before ejaculation. At that point of time I thought I was training my body to last longer. Only good thing is that the frequency of masturbation was not much as I used to have only 3 sessions per week (weekends) like this and I did not do every day.

When I turned 27, I realised that foreskin should get pulled back automatically and glans would be in contact with vagina during sex.I have moderate phimosis and worried about pain as glans is very sensitive. My biggest regret is that I did not take any action during that point of time and only the porn edging time increased from 45 mins to 1.5 hr.

I entered into relationship with my gf on April 2021. I started stretching exercise on phimosis as I thought I would be having sex with my gf anytime.Also I exposed penis glans in shower to reduce the high sensitivity. I also masturbate in shower so that I can roll back my foreskin to see how far I can stretch. That's when I realised that I could not get it up in bathroom and it required fantasy on favourite porn to get strong erection. I tried masturbating in my room as well without porn and it was difficult to maintain erection. I Googled and came across this word PIED for first time.
Immediately I stopped edging and did a 30 day hardcore mode but relapsed on day 23 but did not edge during relapse. I again started the counter and my gf wanted to have sex in June 2021 when I hit 18 days of hard mode. I was virgin but did not feel excited on touching her boobs and my erections were on and off. When I tried to enter, I was afraid of phimosis condition as well because foreskin was still tight. I lost erection and this happened for few days and gf broke up with me. Then I started hardmode with much commitment this time and had completed 84 days.
On 85 th day, I came across this NoFap video where a guy told its impossible to masturbate without fantasy when you have PIED. I tried this and it worked because with zero fantasy, i was able to cum! I tried again after 2 days and still was able to cum.

I am porn free and edging as well for past 6 months and I have been masturbating without any fantasy on porn or erotic scenes for past few weeks( Sometimes I fantasy on real gals) and I thought its time to cure phimosis as well by trying phimosis ring.
1) As I don't have much opportunity to have sex, what are the things I need to do to rewire the brain for actual sex?
2)Do I need to masturbate such that foreskin has to completely go below glans? If yes, what's the maximum it should go below? Actually I want to know how much foreskin roll back during real sex so that I can roll back during masturbation to train for real sex. For me, during erection,I am able to roll the foreskin till bottom end of penis glans but its difficult to roll it back to front.

Note : I think this might be helpful for someone. When I was on day 76, I had a strong urge to masturbate and flashes of favourite porn was coming and it continued for few days. After day 84 when I masturbated( I did not fantasise though and was purely enjoying my hands sensation) , those flashes were completely gone now.