My tax return fees last year were about $1,000 because I itemize on schedule A and have a schedule C form from an active businees. Firstly, I understand that these fees are deductible on both Schedule A and C but are subject to some limitations on Schedule A. What are these limitations?

Second question, can I avoid most of these limitations and what amounts of the fees would be reasonable to deduct on schedule C vs scheduke A? Thanks!