(DESKTOP) Is it possible to insert new query without realoading data from previous queries?

I'm working with differents types of files that are generated monthly. For each type i intend to keep one only pbix file. So, in a file i'd have a query for 201801, 201802, 201803, (...). The problem is: each time i insert a new query to import a new file, Power BI reloads all files simultaneously all over again (and eventually crashes). How do i prevent that, or at least tell it to import one at time so it won't crash?