I dont think its wrong for someone to help others wake for Amrit Vela in facts its
ones duty and it should be considered as Seva. I used to live with a group of Singhs
and we would always wake each other up. Because of their seva, and Guru Sahibs kirpa
I have a much more easier time now getting up without their assistance.
I think your friend is telling you that you shouldnt have the mentality that " if my alarm doesnt
get me up then my brother well get me up". Instead you should have a more vigilant and determined
attitude about Amrit Vela and think " Im getting up early and I will be the one to wake my brother up!".Could you imagine
how much kirpa Guru Sahib gives that Gursikh who wakes up his Gursikh?