So when I do some changes in my code and want to test them in simulator I can't just hit command + B, because the changes will not be displayed in the active simulator. So I have to manually stop the simulator and start it again. It's so annoying and I waste a lot of time because that. Is there any fix for that?

I bought a MacBook Air M2 a few days ago. Today I started using Xcode 15 to learn iOS development. But as soon as I turn on the simulator, I notice that my mac gets very hot and drains a lot of battery. Is there any solution for that? I repeat the MacBook is brand new.