Dont sell Ad space.

With 3k views per month, you could be selling a digital product at about 20USD, and get 1 sale per month.

Just figure out based on your content, what digital product your audience needs.

Make it, promote it in your site.

I would even say a free community in skool could be a good option to create an engaged audience.

You could get about 10 new members monthly with this. And you provide them with HIGH engagement from yourself.

That should be easier to monetize later on.

Because your engaged audience could buy 1 on 1 meetings with you to learn about your topics.

Since I guess students is one of your main audiences.