There is no doubt if the MJO goes crazy in phase 6 it probably will be above normal, obviously to expect a December like 2021 again would be a stretch because the PV for one seems to be weaker this year which would probably not result in the same strength of pattern under the same circumstances as was posted above by bluewave, If you look at current MJO forecasts and use the typical tendency of GFS overdoing and EC underdoing it seems likely we reach 7, its just a question of what it does after...so long as it does not loop moderately to strongly back into 6 by 12/5-12/10 you're in a better place than a year ago