Feedings

Kari • Married to my best friend of 7 years and high school sweet heart. So excited that we have our first baby on the way!😍
THis is my first pregnancy so I just want some opinions on what you ladies think. 
Which is best?? Having your baby in a feeding schedule or just feeding them on demand, when ever they think they are hungry..
And another question. If you do have them in a feeding schedule, feeding every 2-3 hours... Do you also need to feed them at night?? Like if they are sound asleep do you need to wake them up to feed them?? Or do you just continue the schedule in the morning?