I have about 20 hours worth of meetings per week. I've been arranging my meetings into as few days a week as possible, and it helps a lot, but eventually there

I have about 20 hours worth of meetings per week. I've been arranging my meetings into as few days a week as possible, and it helps a lot, but eventually there always ends up being overflow into other days. I've also gotten complaints that I'm not flexible. Lastly, I've found these days to be utterly exhausting where by the end of the day I'm non-functional. It is much better than constant interruptions, though.