ladies i need help immediately!!!

so my boyfriend of 3 1/2 months wants me to suck his dick etc as most guys would want but i am soooo scared because it would be my friends time and i’m super scared like is it normal to be this scared about doing this type of stuff??? i told him to wait a few months longer just so i can get more comfortable around him but when it comes the time i know for a fact i’m going to be scared shitless!!! any advice????