The start up godfather / Adopt a start up

What if you could “adopt” a startup for 1–3 months?
By helping buy time off, you unlock the chance for a founder to properly validate an idea — without or before quitting their job.
I’m exploring how founders get 1–3 months of real runway before making the leap, and I’m curious how people here handled that transition.
Looking back, was it time, money, or risk that held you back — and what would’ve actually helped at that stage?
Would you have supported (or accepted support as) a founder before quitting?