1 month 1 day old baby was born 3.330 kgs now 4 kgs it is normal weight? and she is sleeps all day long night time very hungry

A. Seven 00 g in one month is very very good which child is gaining well because a minimum expected weight in every month is about 500 g a child has gained 700 g which is better and which is a very healthy sign and in this age kids can easily sleep for 16 to 18 hours in a day there is no problem