That's an intriguing point. Everything but the last phrase would be consistent with our hero and his holographic counterpart struggling to increase the rate of energy transfer into the applications that can yank them out of the booby trap. That is, the supply of antimatter would not be of concern (not because it's infinite but simply because it's abundant, intended to last for years), but the rate at which it could be transformed into motive power would be riddled with bottlenecks, preventing the warp engines from defeating the alien weapon that drains their output energies.
Even in the last phrase, we could take "m/am energy" as the kind of output
energy that is generated from the annihilation of m/am supplies. But LaForge really should be extending the "rate" or "output" of this, not the "supplies" of it.
...Perhaps LaForge is actually saying "Captain, we've found a way to expend the m/am energy supplies"?