Income must be proven by the listed formats in the instructions.
Because your taxable income as reported on your 2022 Tax transcript didn't meet the FPGLs, you'll need to provide proof in the manner of an employment verification letter and 6 months of paystubs (so getting a job now isnt gonna cut it) or other means if self employed (however that would be proven by your tax transcript). You have been very vague with your employment info so that's all I can provide on that front.
If you don't have proof of employment, you can use assets however they will need to meet 3 times the FPGLs. How do you plan to prove you've had 3 times the FPGLs stashed away in crypto assets and that amount has been there for a year? Ie. Somebody didn't give you the money to deposit yesterday and you are sending it all back to them tomorrow).
Assets are hard to prove never mind crypto currency. If they were cash in the bank, you'd need to provide a statement from the bank stating the conditions and history of your savings.
Are you able to retrieve that from somewhere/someone as concrete proof?
The I864 is more important than you think and should not be taken lightly.
You will not pass go if your I864 is not filled out properly and the amounts within it must match the VALID proofs exactly. They do not do math for you.
PS. The tax return rolls over to 2023 tomorrow so if your tax transcript shows you met the FPGLs NOW, you can now use that instead of 2022. Your RFE may have even requested that. Look carefully.
PSS. Although a JS seems to be your only option, your form still must be complete and correct regarding your info.