There is no way to transfer information from Form 1040-NR in Sprintax to Form 1040 in TurboTax. You will have to start your Form 1040 tax return from scratch and enter all the information.
But you can't just file Form 1040 because you "would like to." If you are a nonresident alien you must file Form 1040-NR. If you are a resident alien or a U.S. citizen you must file Form 1040. If you should have filed Form 1040 but you incorrectly filed Form 1040-NR, you will have to file an amended return, Form 1040-X, and attach your Form 1040 tax return. Follow the instructions under "Resident and nonresident aliens" on page 2 of the IRS Instructions for Form 1040-X.