Is the K-1 marked as final?   If so, it should flow to Sch A Misc Itemized Deductions, which IRS took away back in 2018, you state may still allow for those deductions though.

You may want to read through the information here and see if it qualifies as IRC section 67(e) expenses and can be used as a deduction on Sch 1.

https://proconnect.intuit.com/community/proconnect-tax-discussions/discussion/re-excess-deductions-1...