18 month old haircut

[Racheyg]

Hi not sure if posting in the right place so forgive me if I am.

My son is 18 months old and has curly blond hair (often gets mistaken for a "pretty" girl) it's getting very long and was thinking about getting it cut. He has had his fringe trimmed many times but I'm more worried about him losing the thickness ect.

What's everyone's experience did their child lose it's curly hair after 1st hair cut. X