“Don’t form a company” means you are personally legally exposed. I’m not a lawyer, I may be wrong, but this seems risky.
Why not a "parent" company you keep going indefinitely, spin off other entities as needed?
This all varies by jurisdiction of course, but last time I did something like this I filled out the paperwork myself and it cost a couple hundred only. Gets more complicated with more structure, etc. and any legal work you need - but you don't need to pay for that before it's justified.