Possible to change MACRS convention from 27.5 to 5 year HY convention?

for Depreciation on form 4562, my accountant last year has my rental listed as 5 yr property, HY convention, 200DB method, but turbotax won't let me modify this years MACRS convention for the same property. I tried starting asset details from beginning, but no way to modify the depreciation method that I can see.