Business & farm

Currently, my business is closed because of my health issues. I don't plan to be closed for good. If insurance approves my surgery (they have been denying it for over a year) recovery is up to 2 years. There is no way to tell how much permanent nerve damage there will be and how much functionality I'll regain. This could put my business on hold for several years. Because I'm not planning on closing for good, can I still continue to itemize the business expenses I'm still paying for even if I can't show any income? Example: mortgage interest, insurance, property tax, licenses, etc.