If you decide to do some consulting, do yourself a favor and read this: The Consulting Bible: How to Launch and Grow a Seven-Figure Consulting Business https://www.amazon.com/dp/1119776872/ref=cm_sw_r_cp_api_glt_fabc_XJNP0SP2XS0ECXBBJ7A0
It’s amazingly implementable advice from someone who has lived it, you’re in a position to print money at your leisure, IMHO, with the right consulting approach.
Another option is make something. A friend of mine is a biz school prof who made a piece of software from his research and started a company. It’s already cash flow positive and if he wanted to exit now it would be $20M valuation.
You are basically already half FIRE’d. use that time as you would a retirement!