Baby wakes up frequently to feed

My 1 month old baby has been waking up very frequently to feed. I'm currently direct latching him. He will wake up every hour or every 1 and a half hour. How to make my baby sleep longer like 2 or 3 hours? Is it because of low milk supply that's causing him to wake up so frequently? If so, how should i increase my milk supply? #1stimemom #advicepls