I agree. Don't force it. I know I tried a variety of ways to get the food in (finger, different spoons etc), but I think that was more to keep me entertained and feel like I was doing something
If my LO turned his head away or kept his lips closed I would stop. I would try a couple more times during my breakfast, but never forced it. My LO also gets excited when he sees his bottle, so I figured if he knows if he wants something in his mouth or not!