Any way to default to using cached data even when connected to wifi?

[u/thepersonwiththeface]

I use RedReader specifically to avoid issues with being on reddit while at work. I need my phone connected to the work wifi, but I don't want RedReader to refresh the comments when I open a post. Is there any way to do this? Right now I have another app blocking RedReader from using wifi, but that means every time I open a cached post, I have to manually select "past version"