Re: 3 month old nursing more often at night.
Welcome to the forum!
If there is a reliable way to get 3 month-old babies to go 3 hours between feedings, please let me and all the other mommies in the world know what it is! I mean, I know what doesn't work: scheduled feedings, formula, cereal before bedtime, sleep-training, swaddling, pacifiers, prayer... You might want to read Elizabeth Pantley's book "The No-Cry Sleep Solution" for a realistic look at infant sleep and some gentle techniques which may help your baby sleep more independently.
At 3 months, many babies go through a big growth spurt which results in more frequent nursing. Many of them also start the teething process, and they master or experiment with a lot of new developmental milestones (like reaching and rolling) that often make them wake more. So what you're experiencing is normal. The only thing that may be a bit different for you is that your baby has silent reflux, and his waking could be explained by him outgrowing his dose of medication. So I think it makes sense to talk to your pediatrician about that possibility.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"