@projectmaximus not sure if you’re still digging into this or researching, but as mentioned above, the Gold Card might be a really good option to consider.
I’m in the same boat as you — I have my own single-person LLC that’s disregarded (e.g. “pass thru income”). After numerous round trips with their Workforce Development Agency for income verification, I was finally able to just submit one of my 1099s to pass the income requirement.
But here’s the issue — the 1099s need to be in your name, not your LLCs. Fortunately, I had one client accidentally mislabel my 1099, so it was under my name (even they used my LLC’s federal tax id #). Since the amount was high enough for the threshold, they accepted it.
So if you have 1099s that meet the threshold but are under your name, that’s one option. The alternative is to just go ahead and set up payroll for yourself so that you can give yourself W2s. Since it sounds like you have a bit of lead time on this, it could give you enough time to set it up, and have enough paystubs so that you can submit that to show minimum income. (or if you act really fast and have enough cash on hand, you can set it up right now, and have just a single very, very large paycheck in Dec, and that way you’d get a 2020 W2 for the full amount)
Of course, there are tax implications on this (e.g., you may encounter some hiccups with deducting on QBI), so you may want to talk to a tax professional to understand the pros/cons.
Best of luck with everything!