baby’s

Al Salam Alikum,I am expecting a new baby in the coming week or so in Shaa Allah. I want to make sure that I follow the proper Sunnah related to the birth of a baby. While I know all the rituals, I am hesitant to shave his head just because I am afraid that I will hurt him since I have no experience doing that. My wife is more afraid than I am and insisting on shaving the baby?s head might lead to a problem in the household amidst what is supposed to be a happy occasion. Is it possible to avoid shaving his head while remaining faithful to this Sunnah. For example, can we estimate the weight of the baby?s hair, find out how much it costs in terms of gold or silver and donate the equivalent in cash? If yes, did the scholars specify an agreed on estimation for the baby?s hair weight? Jazaka Allah Khairan..