Reply to Dan Allosso at https://danallosso.substack.com/p/what-value-do-i-add-to-the-substack/comment/16463063
I just saw this morning that Jillian Hess, a professor/researcher/writer at a community college in New York, is also contemplating some of the same territory and trying to balance out the necessaries: https://jillianhess.substack.com/p/introducing-ps-a-new-paid-subscriber
I see that she's using both Amazon and Bookshop affiliate accounts and links in her stream. Have you delved into this for supplementation (albeit probably small)? I've done it for years and it never nets enough to even cover my hosting costs, though it makes the hobbyist portion of the outlay a bit more comfortable.
Beyond this, you might appreciate her particular Substack on note books and note taking or her new book:
Hess, Jillian M. How Romantics and Victorians Organized Information: Commonplace Books, Scrapbooks, and Albums. 1st ed. Oxford: Oxford University Press, 2022. https://amzn.to/3VY4RU7
You're probably beyond needing them, but Substack has been building their writer resources and tips for helping to build paid audience. Details at https://on.substack.com/s/resources and https://on.substack.com/s/office-hours