3 days from closing and having trouble with lender

[Kaitlyn Beard]

Hello all, 

I am 3 days from closing. I had an issue with my 2021 tax returns and my CPA had to get them amended to be fixed. The underwriter said the 2021 tax return cannot be used as legible since its been amended. Keep it mind I already have thousands invested into the house I am 3 days away from closing on. My lender said I could co-borrow with someone who would be a potential partner. I have someone interested that I am really good friends with and share mentorship over finance over REI. For an official partnership, are there any partnership proposal documents you guys have to make this be presented as professionally as possible? Any recommendations or help would be nice. Time is ticking until closing!!! TYIA :)