Hello there!
I've been there many many times... thinking if I should quit my job and try to go full time dev with my games.
My case is worst than yours, so I'd also look for some advice here. Due to Corona my job has gone worse and worse, making now the work of three people, without weekends nor hollidays. When I arrive home I don't have energies to continue programming, and I have many WIP games abandoned.
I have a game with almost 1M downloads, and other with more than 200K, I've made nice profit in the past, and I was thinking that if I spend 2hrs/day I can make X revenue, the logical thing would be that if I spend 8hrs/day I would make 4X, and so...
A problem I see here is Google itself (or Apple), if someday they decide you're violating whatever they can unpublish your game (one guy can decide that whatever thing in your game isn't suitable for kids or any other absurd thing), so your revenue can be close to zero from one day to another... it's very dangerous to depend on only one thing. You can make almost all your revenue from games, and try another things to make extra money (from dropshipping to cryptos, making webs for little companies, or whatever)
Anyway, good luck with whatever you decide, you're a smart guy and I'm sure things will go fine, Andy.
Regards