Use Newpipe and only use the RSS based chronological feed for watching stuff. (Or just use a nice rss reader like feeder). Only subscribe to channels that make actual quality videos that you genuinly enjoy or make u learn cool stuff. That got me down to like 2-3 20-40min videos per day. When there is nothing new in your sub feed you stop using youtube. Any channel that frequently posts shorts gets kicked out of the feed.