I'm reminded of Jim Sterling's video review/impressions where he complained that Trico catching and eating a barrel mid-air was cool but it only happened twice to him in-game seemingly at random. Well....
https://www.youtube.com/watch?v=aRcwpzBLuCQ&feature=youtu.be
You might want to spend some actual time working with Trico, learning its visual cues and executing it. I feed him the same way every time. The only time he refuses is if he sits and goes on a hunger strike later in the game.
No, he'll go to the general direction. If you direct him at something that doesn't actually lead anywhere or has no relation to the path your taking, he'll gruff at you, sit down and stare. Once you walk into a new area, Trico does a pretty good job of looking at the next jump point or general area where you need to go. Pay attention to him and follow his lead. At other times you need to observe the environment yourself. I'm nearing the finale and I completely love every minute. The major platforming sections and the scale are breathtaking!