L.Z.
I did my Daughters whe she was 4 months (she was born with a lot hair too...)I was going to do it before that but my husband thought she was not going to grow hair back again but she did ....
In my family and a lot of my friends they always do ti .My sister did to my niece and she was 3 months..
It helps to lose the baby hair that they are born with and you wont have those "baby patches: and their hair would star growing even ! and babies look really cute when they are bold !!
In my husband family a lot people where saying that why I was doing that but now my sister in law started to the same thing because she saw how my daughters hair was growing.
By the way my husband use clippers too!! :)
I am just telling you my experience , ..I don't expect you or anyone to the same thing but always respect what other people say and it has help me a lot with a lot new ideas and thankful for that ..good luck!!