3 months for an IPA is not a drain pour...most people would be hard pressed to notice any difference. Fresh is better, 3 months is fine. Most breweries say their IPAs have a 5 month shelf life.
I agree ...and a lot of heavily dry hopped IPAs are better at 14 days then they are the day they were canned/kegged.
Most IPAs will start to show some early signs of oxidation after 3-4 months, depending largely on the malt bill.
The majority of beer drinkers probably wouldn't notice but an everyday IPA drinker would.
We test ours weekly and the peak flavour usually lasts 6-8 weeks after canning for most IPAs but they're shelf safe for six months.