Not to pasken but this is what we always did in my parents house growing up. Make an omelet (or scrambled eggs). That needs a low flame so you’d be allowed to lower the flame so the eggs don’t burn. Ofc this only applies if someone will afterwards eat the eggs.
However, I second everyone else that posted… ask a Rav to make sure.
You can't stam lower the flame but if you have something cooking on it and it needs a lower flame, you're allowed to lower it. If nothing is on the flame you can't lower it.