Think I'm 5A and started losing my barnet when I was about 24/25.
Best thing that ever happened to me as I always had shit hair anyway!
Now it's just grade 1 all over, nice and neat and quick in a morning.
To be honest it does not bother me in the slightest, in fact I really like it!
I find if you are not bothered, then nobody else is either. That's a word of advice to anyone losing their barnet.
People smell weakness in others a mile off, be assured if you try to hide your baldness, are touchy/awkward about it or plain refuse to accept it. . . .others will latch on and poke even more fun.
Be cool about it and invest in clippers!