There you go, you have an advantage over many players who are in the match with you. Might as well try to capitalize on this bit.
As for "being a T6 player", well I'd recommend you to take it easy and slow. No rush!! Every tier presents you with a different play style, and you get used to it gradually. In order to become one of the pros for a certain tier, you need to play a lot in that tier. Now, you can start by playing T6 exclusively, but that will hamper your progress to higher tiers since you get so used to that tier, it becomes a second nature to you, but, at the same time, you start to forget how to play other tiers effectively. And from my experience, once you get used to tier 'T' for example, you can always go back and smash tiers < "T" but that is not true for tiers > "T".
I slightly disagree on one point in some of the posts above. You cannot learn this game by playing co-op and scenario, unless that's what you primarily target for. Because enemy there is predictable. Once you figure out the pattern, you can do the exact same thing every game and come on top. That's how almost 90% of my Atlanta on old Narai was top of the team, but I took her in PvP and realized it's a very challenging ship to play.