Almost everything can be done virtually these days including many property management functions. 

Since you're not looking to make it a full-time career, you might consider passive investment options such as investing in real estate syndications - this GP/LP structure as a limited partner, allowing the GP to earn you a return allows you to invest in real estate without the day-to-day responsibilities.

I took the course last October... got swamped in my currently real estate business... went through a 90 day "challenge" course with RAL academy....

Lived in dumps that I fixed up and sold or rented while working 50+ hours a week at my day job. 

I even worked at a movie theater for one day.

I don't even know where to find deals like this these days...  

If they push back, give them the full 90-day notice.

Full disclosure - I knew John back inthe late 1970s early 1980s when he traveled the guru circuit of those days as guest speaker at REI clubs selling “books and tapes” at the back of the room.  

I would focus on a strategy and you and your brother like (Do you want day to day management of a house flip?

I bought my first rental in June of 2024 and have had a tenant that has been making late payments since day 1.