Fish oil is something you should be taking for the rest of your life. I would argue it's the single best supplement you can take.
Try blending the fish oil in smoothies or mixing it into a protein shake to mask the taste.
Once you are done the 2 bottles you already bought, buy a good quality fish oil in capsules. I recommend 3-6g per day for general health and 6-10g per day to optimize fat loss and recovery.