If breastfeeding, your baby will let you know when s/he needs to eat. S/he should eat every 2-3 hours. S/he will stop sucking and refuse the breast when done. If on formula, s/he will eat 2-3 ounces every couple of hours. You know s/he is well fed if s/he has around 7-10 wet diapers and 2-3 bowel movements per day.
A 1 month old will be eating anywhere from 2-4 ounces of formula every 2-4 hours. If breatfeeding the 1 month old will be eating closer to the every 2 hour mark. These are just averages and can change depending on the baby.
Generally a one month old should be eating approximately 15-20 ounces of milk a day. Obviously they are WAY to young for solids, so it's just milk at this age.
Really it depends on your child. If you are breastfeeding or bottle feeding. Most of the time at one month old the baby is only drinking 4-5 ounces every 3-4 hours.
One month old infant's calory req. Is approx. 500k cal/day should be given by breast feeding only. 2. 2gms protiens/kg. ,66. 7 mg calcium/kg,50 mg phosphorus/kg, and 6. 7 mg mg/kg is daily requirements.