I need sleep 💤

Help I have a new born and he sleeps during the day and is awake at night I’m so tired it’s been 2 weeks and haven’t gotten sleep I sleep 4 hours every day because I have a 1 year old and a 4 year old and keep me active all day while the new born is sleeeping all day and at night he’s awake I make things comfortable for him and I feed him enough but still stays up any tips ?