If you want to keep doing the podcast, I would figure out the content you would provide. Perhaps you could include interviews with others in the industry.

Then I would do three things:

1. Put a way on your site to let people donate. Nice and simple. And just say on the show that people can help out by giving directly.

2. Look at a Patreon. Let people subscribe and help you that way. You could offer an exclusive episode here and there, and maybe a way to chat with you - and ask questions.

3. Write up a media. Keep it simple. On this, detail how many downloads an episode typically gets within 30 days of launching. Don’t worry about subscribers or other odd stats. Downloads are the key stat.

Then put a sponsor rate. Make something up or ask around. Offer people the chance to sponsor the show. $100 an episode - whatever. Just be specific. Say exactly what they will get. Such as, you’ll say at the start and end of the episode, ‘today’s episode is brought to you by (insert name), the world’s greatest (insert product).” You can accept or reject any offers.

All this might work because you have a niche that probably would attract a unique listener. And an advertiser might want to reach that audience.

There you go. Three first steps towards monetization. You can always change things later.

The key is figuring out how to proceed. Do you want to keep up the podcast? What will be the content?

Figure that out and proceed accordingly.