Boot priority

Is it possible to set boot priority

I have Android and of course CoreELEC but every time
CoreELEC starts instead of android I would prefer to switch from Android to CoreELEC when the need arises using the APPLICATION

is there any chance to move it, maybe some console commands?

If you want android just remove your sd card with CE on it and put it back when you want CE to run.

I know this solution but that’s not it
Why did I ask such a question?
Because with CoreELEC installed on a pendrive
always starts Android as 1 system
But installed CoreELEC on sd card after reboot always starts
CoreELEC instead of Android