iPad premier rush

I am using premiere rush on an older iPad. I edit with it a lot but my iPad says premier data is holding 296 gb which is taking a lot of iPad space up. When I go into premier, all of my data is only 50 Gb. I looked at other replies that suggest to clear the cache but I don't have any settings or edit tabs in premier. Only very basic tabs and under preferences I only see storage size. I think the iPad version is basic compared to a laptop version but I still need help with this because it's affecting my iPad performance and I don't want to delete any of my data on the app because it's only a few projects. What should I do ? Thank you in advance.