My bottle is open for about 3 months now and only 25% full. I went back to it after not drinking it for about 4-5 weeks. The oxidation was well at work and the fruit is even more intense. This jacks up my score by 2 points.
So don't judge this dram by the just opened bottle. The first dram instantly is at about 87 points, then rises within 60 min. of air to 89. It cracks the 90 after about two weeks. 92 after 3 months. Fantastic stuff.