Im bottlefeeding baby, he is 3 month, he took a long nap and missed two feedings, should i worry? or maybe increase dose for this time only?

Self-regulation: Babies will generally feed on demand, as long as they are otherwise healthy- they will wake.They will stretch out feedings as they get older. If this is only an occasional thing and weight gain is good, you are probably all right. You will probably see him eat more with the next feeding- as long as intake is 26-32 oz a day, it is all right.