3 week old only sleeping for an hour at a time

During the night and first thing in the morning (until I get out of bed), my 3 week old is only sleeping for an hour at a time (sleeps normal throughout the day). He normally eats for 20-30 minutes, but at night he's only been eating for 5-15 minutes. Last night I tried giving him 2 ounces of formula with gripe water (gassy baby) to hopefully keep him asleep longer. It didn't work. I also give him Mylicon a few times a night assuming that's why he won't eat a full meal.Any advice on how to get him to sleep longer would be much appreciated before I lose my mind from sleep deprivation! via /r/Parenting https://ift.tt/2MQXddz