Overfeeding a breastfed baby?

Amanda

My 5 week old gained 4lb in one month and is exclusively breastfed. Ped said she’s likely eating too much from an oversupply and wants me to pump a few times per day to reduce…won’t that just up my supply even more?

I am not engorged at all, but I know I have a fast flow.

She’s a cluster feeder and feeds in small amounts every hour or less. Has this happened to anyone and what should I do?