Switching to exclusively pumping??

Hey mamas! So I have a 9 month old and we have been exclusively breastfeeding since birth. Recently, he has been refusing the boob and so I’ve been pumping and giving him bottles. My question is, how do you keep up with the demand pumping? Has anyone had success with starting exclusively pumping so late in the game? I’ve always had good supply and have been replacing each nursing session with a pump, but I’m worried about how it will affect my supply. I’d like to get to a year of ebf, but obviously will do whatever it takes to keep my kiddo fed. I just knew that nursing exclusively wasn’t working out for us - it was making me incredibly anxious.