my baby slept yesterday by 12 am and got up by 4 am and drank milk and then slept again she woke up by 6am and was irritated and cried with stretching because of nasal block.there was some nasal mucous and I put 1 drop of saline in each nostril and she drank milk and slept.and again I gave milk by 8.30am. she drank and again sleeping which is unusual timing for her.usually she woke up by 8.30 am or 9am after drinking milk.is this normal?do babies get irritated and tired because of nasal block? she is coughing 3 to 4 times per day is this normal?