Three. The three accounts

Nobody here is asking you to delete anything. But it is worth noticing that the feed is not weather. It was assembled, mostly by you, one follow at a time, and a good deal of it was assembled during periods when you were already feeling low.

There is usually a small number of accounts producing most of the effect. Three or four. You almost certainly know which ones they are, and you may have known for a while.

Muting one of them is not a detox. It has no start date, nothing resets, and nobody is told.