You need to file it all together. You should not file multiple tax returns. Do not mail the return you've already prepared. If you drove for a ride share company you were self-employed, and will need to use TurboTax Self-Employed. You can easily add your W-2 from your part time job to that return, or you can upgrade your other return to self employed and then add your self-employment income to the return you've already started.
