Social App Pages Reloading Every Time You Switch

I am creating a social media app with a bottom menu, right now every time you switch to a new screen the page has to load. Is it possible to have it so that when you open the app the screen will load the first time, then once you go away from that page, the data is saved so when you come back to it the page does not have to reload? For example switching between profiles and activity pages.

Thanks for the help!