I've talked before about how early in my career I forcibly made a no-meetings WFH day each week.
That day for synthesis and reflection was the source of nearly every game-changing idea, an enormous source of leverage.
A lot of people over the years have told me "I wish I had the time to do that, too."
I didn't have the time to do it--I made the time to do it.
If you don't push back on it, the low-leverage work will expand to fill every single inch of space you give it.