For something 8.8% it will prolly take at LEAST 2 months to mellow out the alcohol. I made a Belgian Saison that ended up being 10% and after 8 months in the bottle, it has an amazingly complex flavor.
I'm trying to catalog every brew online so I don't have to keep notes all over the house. Check it out on my blog site below:
I think it depends on the kind of beer and the flavor profile of the beer. If this is an IPA then it could actually be very good in 4 weeks if it doesn't taste like rocket fuel now. I have had a 7.8 percent IPA turn out great with just the three weeks to carb it up in the bottle. I would shoot for having that be a nice beer for new years. I am dry hopping a 10% IIPA tomorrow and other than it being a bit hot and a tad green it is quite delicious. I expect to enjoy one in approx 4 weeks.