First off i'd like to state this is NOT a theory, this has worked before, however there is no further evidence posted that this has been hotfixed since, and the only way you will know if it's working is if you actually do the exploit.
So basically, from the transition from season 9 to 10 and then 10 to 11, our RBG group was grouping up @ 3am EST (our server reset time). At this point in time, your point cap will reset for the week, please note, this is not the reset for the servers going down for the next patch, i mean this is the soft point cap reset.
After your points have been reset, que atleast 1 RBG and it will count for your weekly RBG done that week (this can be a win or a loss, doesn't matter)
Basically all you're doing is doing your rbg for the week before the servers go down and the season ends for a week (meaning you cannot que for a week) as there is time to que before the servers go down and after the point cap resets.
This is extremely handy for people who are 2.2k+ in rbgs atm and want to get a head start next season. Also since t2 just requires you to earn 27k conq, doing this will allow you to get to that 27k cap before anyone else, and generally get an extra piece of gear. This also works for arena as well, just rbgs give a higher cap so i'm assuming unless you're like 1800 in rbgs and 2600 in arenas, you'd que rbgs>arena for your cap.
I'm going to state again, there's no way to know if this was fixed or not until the time comes. If mods determine that this is considered a theory or that this isn't somehow an exploit, feel free to lock it. Was just trying let people know about this to get ahead of everyone else.