High current on pcb traces
It is a good idea to do that, my recommendation would be for you to calculate the effective width of copper connecting layers in each via (perimeter of the hole * thickness of the plating) so that it matches a couple of times the width of the trace, make those holes as small as possible and put no more.

The reason for that is that if you put too many holes and those holes are big, then in the effective section of the trace in which you are placing them may be substantially reduced, there are other ways to avoid that like distributing the holes over a bigger area, yet you also want to keep them close to the connection point.