I noticed the same about myself and have been doing something similar. I haven't been as focused on cutting down things I follow (actually even increasing), instead just paying attention to what I find valuable and aggressively cutting out everything I either dislike or find superfluous and spammy (eg if I see the same post multiple times on my reddit feed, I'll quickly check the poster's profile, if they spam the same content on several subreddits regularly I'll block them even if the content is something I enjoy).