Returning Member

Can I deduct business expenses if I had more expenses than income in past year?

As an independent consultant I made over $100,000 in 2016 and several years before that. I was able to to take home office, business expenses etc. to reduce the tax liability. However, in 2017, I only made $1500. I am still using my office, still trying to gain new business, looking for full time job, and meanwhile am compiling my 30+ business articles into a book. Can I take more than the $1500 in 1099 income on my 2017 taxes? Is there a rule of thumb I can follow? thank you.