You can not run two campaigns for the same track at the same time.
If you want to do something similar, you will have basically two options:
1) Waiting until your campaign finishes and re-launching it through our "Renew campaign'' feature.
The renew option will re-submit your song to a whole different group of curators, the curators that reviewed your track on the initial campaign won't receive it again.
2) Waiting until your campaign finishes and set up a brand-new campaign for your song from zero. This means, sending it once again to our A&R team for review and waiting until they contact you back to give you information regarding audience and prices.
We highly recommend to just go for the first option, as you will save time and wouldn't have to pass through the approval process one more time.