[pvarangot]

12-18 months is not enough if you don't have another safety net, like living with your parents or something. I wouldn't try a career switch like that without having a community of people that will help me, like in a new job or as part of a bigger project, or at least four years of runway.

If you become even a mediocre game developer-promoter in 10 months I'd say you are really gifted or got really lucky and got all the opportunities to learn fast. When you start running out of money and only have three or four more months or runway you will need like rock-solid mental and physical health to not go crazy.