Can I replace only one tire if the other 3 aren't very worn?

For context, I drive a Toyota Yaris on 17 inch wheels. I hit a pothole and got a bubble on my front right tire (the pain of running low profile tires). Anyway, I bough these tires something like 6 months ago and only have 5000-ish kilometers on them. The other 3 still look in perfect condition. I know it's normally recommended to replace tires in pairs, but is that really needed here considering how new the set is? Feels stupid to replace a tire that is practically new.