Hello fellow Fapstronaughts

Hello,
Just been reading about the rebooting and how much help it's given people and I thought it might give it a try.
I've recently started a sexual relationship and I been having problems with delayed ejaculation. I had this problem with my previous girlfriends but at the time I put it down to other problems but now I think the cause might be PMO related. On average I used to PMO about 3 to 4 times a week since I was 15. Over the years I graduated from magazines to the internet which has led to me masturbating to unrealistic 3d/Hentei depictions of women together with long stints of being single between relationships, which has likely de-sensitised me to real sexual encounters. Therefore I going to try the PM challenge for 90 days and I'm 8 days in.
If anyone is going through or has gone through a similar experience any tips or observations would be very welcome, and I am likewise willing to help or give advice to anyone whatever way I can.