Cultivating that passion is an art. A modern tool which I've found great to let my kids grow their math ability is the game Prodigy Math. Worth checking out - it's fun (do math to gain spellcasting ability in the game) and gently pushes the envelope of what they can do. It emails parents with details on what math problems the child didn't get right and with sample exercises to address those areas. I have no connection to them other than being a customer.
Maybe 3 hours a week or so depending on what else is going on. Fairly frequently I hop into VR for a game of contractors for 40 mins at the end of my day (instead if watching TV or whatever). I also exercise occasionally in VR, maybe once or twice a month using Thrill of the Fight boxing.
I would totally rather work on this all day instead of being hunched over a laptop. The freedom of posture, and the expansiveness of the desktop real estate blow laptop productivity out of the water in my opinion.
Infinite is my answer. I sit down all day at my desk job. I like to move in my free time. VR gets me up and moving, I love that. I don't play console or PC games at all.