That guy is full of shit. In the modern diet, the ratio of omega-6 to omega-3 is anywhere between 15-1 and 20-1. In the environment humans evolved to live in, it was apx 2-1. REAL nutritionist researchers (not the guy who gave you that bad information) suggest a diet of 3-1 omega-3/oomega-6 is optimal.
So in short....don't increase your omega-6, you're already getting it. Increase omega-3.