EBF but need to create a milk stash

I'm starting to stress because I need to pump to create a freezer stash for when I go back to work but I'm finding it hard to find the time to pump because my 7 week old wants to eat every 1.5 - 2 hours. I might get 1.5 ounces from both breasts when I do finally get the time to pump. I would love to pump out more in one session but I don't know what to do to make that happen.

It's all so overwhelming. 🥴😭