I've used and still have the DeSantis nemesis, the Mika pocket holsters, all kinds of stuff
In the end the cheap uncle Mike's size 4 works best for me.
Small footprint, super light, breaks up the shape without adding hulk.
Now I do actually practice my draw, standing sitting prone etc. I've probably done this maybe 10 thousand plus times, draw -sight picture- fire, repeat. There's a certain motion in my draw, and the holster has a textured grabby strip across the middle, it never comes out with the gun. If you have a good place to practice drawing fast and firing, give it a try. Try it while moving- drawing as you step back or to the side, creating distance etc.
This is how I am well armed for my purposes with a 5 shot airweight. My 642 by the way looks like Jaws has used it for a chew toy. She sure is ugly. Ugly and innately familiar. I can stage my trigger and put rounds on target at the rifle range.
Anyway, I suggest the uncle Mike's size 4. I know everyone disparages pocket carry, but we all have to do what works best for us.
You don't need to apologize and you don't necessarily need to carry your p365 if it isn't working for you in the summer.
I just advise some practice so you can realistically assess your abilities and deficiencies for focused range sessions.
The light little revolvers are a worthwhile and rewarding pursuit but (at least in my case) it was a process of many years and I hated thr 642 and even lcr at first.