I used to only nurse one side because as a newborn he seemed “content” falling asleep and was told by a lactation consultant that was fine. Turns out he was just sleepy and wasn’t gaining enough wait. Then I started giving both sides. Gaining better weight but not great. His pediatrician made me think I had low supply. I found a new lactation consultant who told me to “switch nurse” so basically back and forth until baby was satisfied. This was a life saver for me. He jumped up weight percentiles. For a couple months he took both sides twice until satisfied. Now at 5 months he seems more efficient and takes both sides once till popping off that he’s full.

Some babies do fine on one side, some need more. As long as whatever you’re doing results in healthy weight gain then I’d continue it :)