Can I warmup before the sessions like that?

Hello, I have been practicing PE for 2 months now, I have already achieved notable gains, I just wanted to clear up a doubt, I always practiced PE in the baths, now for financial reasons, I have to practice without being in the baths, I do not have microwaves for other forms of warm up before sessions, I always warm up in the bath, my current routine is about 5-10 minutes warm up (depends on the day), 5-8 minutes stretching, 10 minutes dry jelq, 5-10 minutes warmdown, I will not change the routine even stagnates, I keep making gains, but I wanted to clear up a doubt, what other heating methods can I do? Bearing in mind that I will not be warming up in the bath anymore, and I also do not have a microwave and I do not yet have funds to have one (when I have money I will certainly buy), I can heat a cloth with boiling water in a mug (really boiling), and use for my warm-up sessions? Thanks in advance, sorry for the bad English, I’m Brazilian.

If the climate is warm enough, it might not be necessary to do a warm up. I’m not sure.

I just know when I visit regions that are hot and humid the kind of relaxation of the penis that the warm up is needed for is already present.

Granted Brazil is a pretty big country with different average temperatures, you might live in a colder region.

You could also probably just put a sock over the penis for a half an hour to get a similar effect without the energy cost.