I can only offer my own perspective (1 month experience, starting from zero, now at around 96$, out of that around 55$ from playing micros).
I started with cash games with 6.5$ earned from freerolls
while minimum buyin for those games was 1.4$. Pretty bad huh? This gives you an idea of where I am coming from.
1. Six tables seem too much, I started with only one and now I am trying to play 4 but at most I am breaking even... my quality of play really drops off sharply. Maybe it is the same with you?
-- You seem to be playing around 1 hour only? Try 3 tables for 2 hours, basically you are probably quitting when your brain is warmed up but not yet tired.
2. When I was underfunded, I avoided variance at all costs
. Basically I played one table, observed habits, mostly played people and not cards. I stole blinds a lot
and it got me up to around 30$ and then it was easy sailing. This is exact opposite than what you are doing.
(Now my variance is horrific compared to the start but my win rate would be OK if I didn't try to play 4 tables even when I am not 100% fresh. Yesterday I had the biggest losing day in cash games, -8$ which is four max buyins... but I won 7$ on a freeroll so all is not so bad ).
3. When you get to maybe 20 max buyins start using them with auto top up to speed up things and of course you can start going all in etc.
4. At 50 max buyins (this is where I am now) you can start expanding tables a bit in order to prepare for the future, or keep grinding up to 100 buyins for the next level etc. That is my current idea, I will take stabs at 4 tables until I can actually play them without the big decline in quality of play that I am experiencing now.
5. If you are short of cash, play freerolls. They help.