6 month old is doing this! Help?

Mar

So, my 6 month old at about 3 weeks ago, she started laying her head on things. Leaning her head on my shoulder when I’d carry her (for a brief 5 seconds) I thought it was cute, but it would catch me off guard since she’s never done that. Also she does it when she’s playing. She’ll suddenly stop playing and lay her head on whatever is there (pillow, blanket, toy, floor)

On Friday of last week, she had her 6 month check up. I expressed this concern to my doctor and he checked her muscles and body structure. He says he sees nothing wrong and she developing good.

Well, just this past sunday ( 2 days after the appointment, she started tilting her head sideways randomly (seen in picture below)

Can this be a sign of something? She doesn’t look uncomfortable or anything of that matter. It’s just odd to me and it’s random.