If that's what you think darl, then you're probably right . You may find that expressing a bit before he attaches, as you mentioned, will help. Possibly the flow is a bit slower on that side, so on his fussier days he's not happy with that? It's pretty common for babies to prefer one side over another, so you're not alone there

Maybe have a chat to your GL at your next meeting, just to run over the possibilities?