Breastfeeding Time

With tracking feeds in the app, my 9 week old was a cluster feeder from day 1. The total time spent a day went from 7 hours to averaging around 5 hours now he is sick and has dropped to about 3 hours so I am worried my supply will drop as exclusively bf ...anyone else in the same boat or can speak from experience...how it worked out when they got better? I have had to start adding in 1 pump session just to relieve myself from engorgement 🙃