Happy 4 month birthday, Sam!
You are 25 inches and 12 lbs 9 oz! That is 50% and 10% on a full term baby chart! Think he might be tall and skinny like his Daddy! You are a really happy baby and you laugh a lot now! You are tolerating tummy time more and more, but still prefer to be on your back. You definitely roll from your tummy to your back instead of just squirming over! You are decent with holding your head up, but the doctor (and daddy!) just say that's because you were early. You coo a lot--way more than your sisters did and you can get very loud! You are hitting all of your milestones appropriately. You still sleep swaddled up, but you are getting very long for this. Just in the last few days you have started reaching for toys that are in front of you! We love you!