You certainly can. Most trace element supplements are a bit of a black box and more or less impossible to test for unless you’re doing ICP testing. Following the Triton Core7 process is best for people that want to keep a closer eye on all of the various element levels in your tank.
If you accidentally dosed too much of a trace element supplement, the best solution is to immediately do a significant water change to dilute the elements. You’re probably okay in most cases but doing a considerable water change is wise.