I found your question when googling the same, and just found the answer on another site. Worked for me in Chrome, but I had to maximize it ALL the way, not just close.
Feature to mute categories from the main feed doesn't exist (vote here).
Currently the only choice is to use 'Mute Filters' to create a temporary mute for individual websites on all feeds. You can pause it at any time if you want to access the muted feed.
Please note, that this is a Feedly Pro feature.
Click on "Filters" on the left navigation bar.
Add a mute filter with keyword "site:mutedwebsite.com"
Then you can activate, and pause the filter as you wish.
Best Answer
Right-click on the feed and click
Delete
.Tested in Chrome 77 and Edge on Windows 10.