how long could I leave my baby to sleep after feed in day n night???

as long as baby wants. but she needs to be fed every 2-3 hrs

for one month old baby of 3.5 kg is fed every 2 half hour . baby in day
sleep for 1 hour 30 mins . then again wake up to feed have 15 mins of play . he sud have 5 to 7 hr sleep total in day

for night a one month old of 3.5 kg can sleep of 2 and half to 3 hours and every 3 hour will need fed

On an average three hours.

On an average three hours.