Soooo I let myself go 😢😢 can any mommy tell me what to do to get my supply back to where it was.. I…

Soooo I let myself go 😢😢 can any mommy tell me what to do to get my supply back to where it was.. I still get milk but I haven't pump since fully going back to work.. I'm highly disappointed in myself and I want to be back to where I was.. I pumped recently and surprisingly got an oz .. I just wanna hurry up and get it back before it officially dry up.. Any tips will be greatly appreciated