My LO is starting to get a flat spot on the side of her head and we do a lot of tummy time, holding her, etc, but she favors one side of her head for sure. I even tried to prop her head up the other way while she sleeps but she finds a way to lay on that side again. Is this urgent to take her to her doctor or can it wait until our next appt in three weeks? FTM so I’m nervous about the flat spot. She also doesn’t like our ergo carrier so can’t put her in that during the day. Not sure what else to do.