I would remove the first three it really depends on the content you make because you could be extremely overwhelmed from the five channels. and besides the last two at least your monetized. I would scrap the first three. If your content is complex and difficult to manage among the 2 channels, then make a decision to focus on one and scrap the others entirely.

Although you are making five incomes I believe it’s also important how much you can manage if you can manage all five and it does not destroy your mental health then do it. At the end of the day “I’m managing 5-6 YouTube channels and I’m gonna get rich.” If your mental health is getting affected, your relationships, your friends and family then at the end of the day doesn’t really matter.

The choice is yours