Probably due to all the spit up, our boys aren't as big as I thought they would be at 4 months. Joel measured in at 12 lbs 14 oz (15th %-tile), was 24 in long (20th %-tile) and had a head circumference of 40 cm (7th %-tile). Jeremy weighed in at 13 lbs (also 15th %-tile), was 23 in long (less than 5th %-tile) and had a circumference of 40.5 cm (15th %-tile). Jacob was 12 lbs 12 oz at 4 months old, so they are right about the size he was, although at their 2 month appointment they were each over a pound bigger than Jacob was at 2 months.
Even though our boys are still spitting up like crazy, we think we have the pain of their reflux under control. Too bad they are both already teething!!! We noticed that they were both chewing on their hands a lot and I really thought I was imagining it when I thought I saw 2 little spots on each of their lower gums where their first teeth would come through. But the nurse confirmed it on Thursday - those little teeth are fighting to come through.
These babies are nice and fussy while they are teething (oh joy!!). Lately they love for us to rub their gums and infant Tylenol is like a good friend right now. When I first thought they were teething I didn't want the teeth to come through yet - babies just look so much different once they start getting teeth and lose their gummy smiles. But now I just want those teeth to make an appearance so these babies can be happier. It must be no fun to be a baby. Jacob didn't get his first teeth until 9 months, so I can't believe those little teeth look like they could pop through any day.
We have started putting the babies to bed a little earlier some nights (early as in between 8:30 and 9 instead of between 10:30 and 11). We haven't fed them in the middle of the night for well over a month now. Sometimes when we put them down early, one or both of them get a little restless around 5am, but they still don't eat until about 6:30am or 7am. I am super grateful for babies who sleep pretty well at night. I have to admit though - I am really looking forward to a 7pm bedtime for the twins, but I have no plans of doing that until I feel pretty certain that they will still make it until after 6am before needing to eat again.
As far as other developmental milestones that the babies have hit - they are learning to laugh, but haven't really started belly laughing yet. Each baby has rolled over from tummy to back, but it isn't something either has mastered yet so sometimes they don't stay on their tummies for long while other times they get all upset and can't figure out how to move into a more comfortable position. To be honest, we don't put them on their tummies or lay them on their backs as much as we would if they didn't spit up so much.
The babies are still pretty random when they sleep during the day and when they are awake, but if they stay awake the whole time between feedings we know that they will struggle to stay awake to finish the bottle. I know that one thing that will make them a little easier is when they have a more predictable awake/sleep pattern for the day with a couple good naps.