NY Non Resident Allocation

I was a NY non-resident for 2019. My W-2 box 16 reflects my full earnings for NY state. My office moved from NY to NJ at the end of January and my HR department gave me an exact figure for wages earned while in NY. Do I need to fill out IT-203-B? Or can I directly edit the NY State Amount (line 1) of the IT-203 to reflect my NY state wages?