I have never personally observed anyone build a business in 7 months and I’m nearly 50. I think your best bet is to get freelance dev work or a part time job to subsidise your income.

I have a part time job and saas sideline which pays a 1/4 of my income. I think techies underestimate the difficulty of sales and marketing. It’s hard work.

I wish you good luck and hope you prove me wrong.