Your 1st mistake. One of the most competitive markets out there.
2nd: If you're tired after 3 days trading fulltime, this is definitely not the right job for you. 12h workdays are normal including premarket prep and aftermarket review as a daytrader.
3rd: I would highly suggest you reevaluate your plans for trading fulltime after 4-5 years demo/live. The signal for you to go fulltime is consistency. If you are able to bring home the dough on 4 out of 5 days for at least half a year that's when you burn the bridges.
You're 54, you have made your income with software development. Chances are you blow up all your retirement money and then you have to compete against the young guns in software development to make it back.
Learn to position - trade as a side gig. Low maintenance positions such as spreads that run forever and you don't have to watch them like a hawk. Get in touch with
@bone
For everything intraday you're heavily outgunned by younger people and machines. Really, I'm not trying to be mean or something. I trade fulltime and every day is like going to the mines....day off? Are you shitting me? I haven't had a day off in like almost 10 years