When I put my first wine through my brand new Vadai barrel, it had already had oak in primary, and was tasting pretty oaky. 60 days later, it felt like it wasn't enough, so I added cubes. 6 weeks after that, "chateau home depot". I was worried. But 12 months after that, it had just a hint of oak and still maintains just a slight essence today (almost another year later). What I'm trying to say is give it time - maybe more than you'd like to. The oak falls back. Try it again in 90 days and see what you think. If it is still too much, go another 90. At that point, consider blending, but know that it'll still fall back a little more.