Update Two Reports to Point to the Same Data set

I have two reports(A and B) that were created using the exact same data sources, various SQL databases. It was literally built by copying the .pbix, making changes and saving with a new name. 

I would like to update Report B to use the Power BI Dataset of Report A, so that there is only one scheduled refresh to manage. Currently, we have two identical datasets uploaded to the service that have to refresh separately.

Is it possible to do this without having to rebuild Report B? I am familiar with building a NEW report off of an existing dataset that has been published to the service, but I am having trouble converting this existing report to use a published Power BI data set.

Thanks in advance for any insight!