How much should my 4 month old baby sleep July 8, 2019 16 32 64 128 How long should my 4 month old baby sleep How long should my 4 month old baby sleep at night How often should my 4 month old baby sleep How many hours a day should my 4 month old baby sleep Baby sleep 4 months 4 month sleep regression Baby sleep 4 minutes 4 month regression naps