This had been an issue for me to address as well. From not having real sex experience the "normal" way apart from a pretty much failed attempt in this sense, (which I put down at the time to partly to her having just expressed she wasn't that into me in the moment), I recently decided to get some practice and fun with escorts or give it a try. The first one although not up for kissing (people often say its limited with Romanians) seemed to at least put the effort in enough for me to have enjoyed it, and I did get hard to some degree during covered blowjob, but when it came to sex it still just wasn't really working right. It wasn't strong enough to do much and I didn't feel much. She changed from doggy onto her back for this reason. I "finished" accidently soon after though without feeling anything great really in the moment.
I realised more obviously then how much I must have accustomed myself to my own hand, and porn. I'd pretty much only watched ammature stuff for quite a while and still had pretty much stopped that beforehand already, but was still edging myself (and sometimes accidentally finishing) to pictures or vids of things like escorts I might like to see ha.
I wondered if I needed to raise testosterone as well. I felt like going to a doctor, to get that checked but felt to avoid waiting for things I'd do what I can myself for now, so I for now instead of viagra or anything got some "T "/sex drive boosting supplements and stopped all porn video and playing with myself.
I would say in terms of this energy I could still be better more consistently through the day but I am getting there and I have definitely worked much better when I "need" it. I had two more different escort experiences so far and was very glad to get more fully aroused, and also be able to last the whole 15 minutes without cumming (I take semen retention quite far and even aim to save it during real action). So the stopping masturbating hasn't made me cum to quickly but helped with my goal of not doing it seems. It must have just got too tired and desensitized before. The last two sessions were still more limited than I would like in terms of the variety of positions the escorts were willing to do and still no kissing so far but I feel they were still overall good experiences overall.
So I'm just enjoying the process of sort of "re wiring" myself to real women and the sensation of them which was actually subtle at first in my experience since only being wired to my hand and porn and whatever rush that gives, but something I will enjoy more, and more than I did with porn as I wire to it.
With diet I have for a while been as healthy in that way as I can. I'm very interested in what does what but there are different opinions on things like fats such as the healthier ones being very necessary to create testosterone. I personally include a good amount of "good" fats at this moment, though am vegetarian. Natural carbs I feel also have their important part in T/sex drive as well. Pumpkin seeds are said to be good for zinc, and I will try pomegranate seeds.