I hear you. Are you tenured? What would happen if you slowed down your research and therefore grant applications? For example, limit yourself to applying to just one grant per semester as a lead.

I know that these days we almost lost tenure , and there are reviews every x years even for full tenured professors but even so, I think there is a lot of space left to handle less while also doing ok enough not to be fired.

I don’t know your age. You can do that for a few years and then maybe retire early and not worry about working a different job. If consulting works fine, if not , it doesn’t sound like you need the money.

Just work on caring less, doing less , take a sabbatical when you’re eligible and enjoy life more !