i urge you to open a patreon,put your content for free as they are now,and add the option to donate,
i would gladly soppourt my favorit author.
your alredy doing work that lots of people enjoy.why not benefit from it,your doing it free eighter way,but people have the option to spend a couple of box to soppourt their favorit author should they wish it.
my guess is a year from now you'd be getting a surplus of at least 1000$ should you decide to act on this idea.