Today morning my baby body become so red. Please suggest what to do.

Is your baby having rashes or skin allergy like breakouts?

I have not found any rashes but his face and body becomes red.

Is he being exposed to excess heat. Use the fan. Also make him wear lighter clothes. Assuming it is Hot IN your area, do not keep too many swaddles Or blankets around.

As Satarupa said make him wear normal clothes cotton one. Apply good baby cream. Bath him regularly. Massage with coconut oil or a good brand baby massage oil

Thank you and I will follow the same 😊