Business Expense Depreciation increase.

In 2022, I started using a piece of equipment that I had purchased for $24,000 for my new business. I also used this for personal use. I did it correctly for my 2022 taxes showing I only used the asset 10% of the time for business. It amortized the equipment over 5 years at $4,800 p/year. So, my business expense for the tractor was $480. For 2023 however, I increase my business usage of the tractor to 85%. When I was in turbotax and went to the asset and "edited", I changed the usage from 10% to 85%. It now shows for 2023, that my business use of the tractor was $7,680. I understand where they got the calculation: 2 years of amortization was $9,600 x .85 = $8,160 - $480 (from previous year) = $7,680. This doesn't seem right to me though as the 85% was only for 2023? Also, when on that asset page, if I keep everything at 10% usage, it then tells me if business usage drops below 50% I have to do a recapture...the use didn't decrease, it increased. Am I doing something wrong? There is no where to put in "did my usage increase"...just changing it on the one asset screen.