7 weeks old drinking milk and every 1.5 hrs

Hi Mummies, My 7 weeks old baby boy wants to drink milk every 1.5 hrs when he is awake. If he sleeps in day time, he can go without milk for 3 hrs and at night time he can sleep till 4.5 hrs. Wondering if wanting milk every 1.5 hr is normal ? #firstbaby #advicepls