Business & farm

Hello there. This thread has been very useful and I am in a similar situation of having begun a business and obtained an EIN but then had my partner essentially not be a part of anything from that point. I did receive 1099s because we used the bank account to pay for things, but the only employees I had were contracted for single jobs.  It is a small theatre company that has always operated at breaking even or at a loss. I personally always covered the loss.  I need to file taxes for the last few years and am hoping to do so on my schedule C...however, we are registered as a multi-member LLC. Any advice would be appreciated. Thank you!