I have a fish allergy that makes me a bit nervous to take fish oil. I tried fax seed and stopped after reading about its ineffectiveness. How much milk should I be drinking for the Omega-3 benefits?

Edit: let me be specific. According to the web, each serving of this milk contains 32mg DHA Omega-3. The fish oil recommendation seems to be 3 grams of fish oil. How do these equate?