Pumping to create a stash

I am going back to work in a month (😭) and would like to start creating a freezer stash for my mom to feed baby while I’m at work.

Is it okay to pump after every feed? Like 5-10 minutes? I have a single electric pump and two wearable pumps. Any advice on when to pump? And if it okay to pump both with the wearable pumps?