Not really. It is true that geologists have identified some patterns in large quakes causing smaller quakes at significant distances.

A major quake that takes hundreds of years to build up stress in a fault, however, would almost certainly have to be just about ready to slip regardless for a smaller quake to trigger them. I can't tell you exactly what that means, but I would guess it would be a matter of causing a quake that was going to occur "soon" to instead occur maybe a few months, or perhaps a year or two earlier.

Unless geologists identify a pattern of seismicity along the Cascadia subduction zone that suggests to them a rupture is imminent, I'm sticking to my plan of general readiness to shelter in place (whether sheltering in place or evacuating is the best option depends where you live, and what the disaster is): Keep at least 3 days worth of food and water, and a way to stay safely warm if the power is out, etc. Visit ready.gov if you want more disaster prep advice.

We keep a well-stocked pantry, my camping gear serves for cooking when the power is out, and if we completely drained our water heater, and it didn't rain, I also have a camping water filter good enough to remove bacterial contaminants, or I can boil water to help tie me over for a couple weeks while waiting for relief supplies to reach the whole region.