Taxes killing my painting business - how do you deduct Sherwin-Williams paint and brush wear?

Running my own painting outfit for 8 years now, and taxes are a damn nightmare. Just bought $1500 worth of Sherwin-Williams Emerald for a big interior job, plus new Purdy brushes that wear out after every few houses. Anyone got tips on tracking these deductions without hiring a CPA? Saw a thread on r/paintingbusiness about mileage too, but paint supplies are my biggest write-off.