Couple PE Related Questions

So i have been doing PE for 1 month(YAY) amd while i havent noticed a difference yet, it certainly has me thinking about my dick and overall sexual health in general. In doing so a couple questions have come up. #1 does edging make you come quicker? I can imagine over time it may train you to last longer BUT I have noticed twice since i started doing it that i have bust really fast if i happened to edge a few hours before sex. I dont have full control over when i cum but typically its around 8-15 mins but yesterday i edged for maybe 20 mins and 3 hours later had sex and came in like 2 mins.

Second question arose from that early ending. This girl was really really wanting the dick and so after finishing her off fingering her she said she wanted round two and lets take a shower and go again. Anyways it took over 30 mins for me to get hard again. Now i dont know what is a normal turn around time for an early 30s male who isnt in great shape because my long term girlfriend isnt the type to go back to back like that so im not use to it but it seemed way too long. In my youth it was maybe 10 mins but yesterday it seemed to take forever even with this girl trying really hard to get me hard lol. What is a typical turn around time for you and is there anything PE wise you can do to improve that?