full team of huges - am i doing something wrong?

i finally got a full team of huges (a mix of some normal, some gold/shiny/rainbow) with one titanic. before, i had mostly huges with several 95% RB exclusives and one strongest normal pet. since i upgraded my team i'm doing much less damage compared to my previous set up.

i'm not doing anything else differently. is it just a matter of waiting until my weaker huges level up more? am i supposed to keep an exclusive and/or a strong normal pet instead of all 99 being huges? should i switch some of them out? bc if i do that, i can't work on leveling them all up...not sure what to do