Any way I can reduce my mercury without reducing my fish consumption?

Possibly. Species of fish that are high on the food chain, such as shark, swordfish, king mackerel, bluefin tuna, albacore tuna, and tilefish contain higher concentrations of mercury than others. This is due to fish at the top of the food chain eating others and concentrating mercury in them. Avoiding these fish will likely reduce your mercury intake.
No predatory . Eat smaller fish that don't feed on other fish like wild salmon, lake trout, sardine, herring, etc.