Funny little trick which worked with Oskar with medication is to have him on my hip (stick it right out so he's sitting on me pretty much), my arm around him and that hand up on his forehead so his cheek was pretty much against my shoulder and he'd open his mouth and I'd put the syringe in and all done. Another thing too was that Oskar didn't seem to like the syringe but a dropper worked better, I think because it doesn't "squirt" out as fast.

Also, I wouldn't worry too much about the food as he's still pretty young anyway and BF is enough for him anyway.