So I noticed today that there's a slight forward bow (towards the body) on my guitar's neck and I'm wondering if I should adjust my truss rod?

I read somewhere that if I leave a small bow in my neck for too long, it'll set like that and later it will be impossible to adjust it because the neck would be in a permanent bow after being set for so long.

But I also read somewhere that you need a SMALL bow (the bow in my neck is really small, maybe half a millimetre gap from the 7th fret when I push down on the 1st and 12th fret) because if it's on a dead flat, there will always be fret buzz.

So should I adjust the truss rod or leave my neck as it is?
No, no, no. Don't go randomly adjusting the truss rod.

Is there a problem with the way you guitar plays? First you need to find what the problem is, what is causing it, and exactly what should be done to fix it. Only then should you start adjusting things.

By the way, it's not the first and 12th fret you're supposed to hold down, it's the first and last. There is supposed to be a gap there, yes.