Mom Guilt

My little is 6 months old and he’s been ahead of expectations on several things but his six month check has me feeling terrible. There are small things he’s not doing yet like sitting independently, or banging toys together, etc and the pedi made it sound like he’s behind and I just feel terrible. I logically know that there’s a reason milestones have such a huge window, but mom guilt is telling me I’m failing miserably at the simplest things. I had one job and I’m screwing it up. I wish there was a switch I could flip to just turn those thoughts off.