Hi,
My son used to make sounds such as “ahh” & “ooo” and coo a lot but for about a month the only sound that’s come from him has been a “mmmmmm” sound. I’ve read that babbling is expected around this age? The “mmmmmm” sound only starts when he’s upset or wants picking up etc it’s not all the time. Whenever he’s playing or I’m talking to him he’s quiet. He does have bumps on his gum where his two bottom teeth are going to be. Is this a phase or should I be worried?