are you using..
platinum, mmt, mb+, prsperity, digital rupay, savemax, aura edge, millennia, swipe up
every month?
If yes, then u should stop and focussing on (by switching those spends to)
swgy or mb+ -- to get upgrade to higher cards.
regular spends increases reward rate, improves relationship and offer better rewards.
spending all cards doesn't give any benefits, reduces rewards, reduces relationship, takes more time to upgrade.
anycase, 9 cards are very less rewarding and 3 more cards have similar benefits with remaining 4 cards in this..
do check your spend analysis and see whether those are really needed or not.