Sanctions against Russia worth while?

Are economic sanctions against Russia worth while, if they don't help make Putin drop the attempt to conquer Ukraine?

I support showing solidarity with Ukraine, but I contend that the best ways to do that are the ways that re effective help. Giving Ukraine arms to defeat and repel the Putin forces is effective, while economic warfare through sanctions seems to be backfiring. Thus, I suggest we do more of the former and less of the latter.