Mock MFS PA state tax reture-how to fill in the interest and dividends for joint accounts in Federals session?

My husband and I file federal income tax jointly, but will file state tax married separately. I understand that I need to create a mock return to do that. My question is, how do I fill in the 1099 INT and 1099 DIV in Turbotax? Should I stick with the 1099 form figures which are for  joint accounts  and Turbotax will take half of the income to my State tax? Or should I manually divide the 1099 form income into half and fill that in? If I do latter, the numbers will not match the reported 1099 ones. Is that OK? Thanks!