>> But yeah, I'm furiously writing code for a product living off my savings,

Probably not relevant to thus thread, and hopefully redundant to you, but writing the code is the easy part.

If you have not already done so figure out your market and start marketing to them. Get deposits, build a mailing list of interested parties, build a presence where your customers hang out.

Marketing is the hard part. Get that done first before writing code. Most ideas fail not because of bad product but because there's no market, it's too hard to reach the market, or you're solving a problem no one will spend money on.

Before depleting all your savings, learn from all the threads in the "ask" section. Code counts for nothing without hod marketing. And marketing is the hard part, the code part is easy.

As an aside, the startup which has a market and marketing sorted out is a lot more attractive to investors.