I looked into omega oils a few months ago and if there was an ideal ratio between omega-6 and omega-3 (there's a good range to be in, but so far no ideal ratio has been discovered. Best recommendation is to just not worry about omega-6 since you'll naturally get a lot in your diet anyway).
Overall my conclusion was that only omega-3 should be prioritized, and an effective way to supplement it was taking a handful of walnuts a day, since it's important to injest a source that isn't oxidized (omega-3 can be prone to it in liquid/oil form if not stored properly or combined with antioxidants)
In walnut form, the oils tend to be protected (especially if kept in the freezer), it doesn't take an ungodly amount to make a difference in a human's omega fatty acid profile, and I didn't have to research individual brands of supplement to find a good one that wasn't oxidized.