Not to pile on to your thread, but any responses will help me as well. I am in a similar place but can also tell you some of the steps my husband and I are taking.
We paid off the house three months ago and have $1.8m in investments, $270k in cash, plus our retirement portfolios. My husband is in his first week of early retirement and loving it. (Funny how he started sleeping like a rock out of nowhere and looks about 10 years younger overnight.)
Our plan was for me to continue working for the rest of the year but, like you, I'm not sure how much longer I can last. Husband's early retirement made me more, not less, eager to join him. I have the cash cow job that doesn't demand a lot but... MMM has posts on this so most readers probably know the deal. I know I should know better, but I grew up without much money and in very precarious economic situations, so being without a steady income is terrifying to me no matter how much we have.
I have no plans to stop working: I do agricultural work and other things I enjoy, and want to focus on those. I'm just afraid I wouldn't get any work, though that's never *actually* been a problem for me (all mental stuff, this).
We live in a very small, cozy house on the far south side of San Francisco. Our property taxes on the paid off house are high, but we don't yet have a desire to move. We love our house and neighbors, are able to bike and take public transit almost everywhere, and are staying put for now.
Six months of high roller spending for us (i.e. not trying; eating out twice a week; flights to see family) comes out to $36k/year, which I'm confident we can bring down. This spending includes everything though: all insurance, property taxes, food, transportation, etc.
Health care is my big focus right now: the cheapest I can find via Covered California is a little over $600/month for both of us, with a high deductible, which I'm being super whiney pants about having to pay.
I have not looked into dividend income yet: that's on my to-do list. I don't understand it well enough yet.
Otherwise, I can't think of anything else you should be doing.