You are confused, or lack reading comprehension.
Jesus taught the law in the synogogue, even as a child.
Do believing Christians keep kosher as a matter of religious law/theology? Do they keep the Jewish Sabbath as a matter of religious law/theology? The clear answer is "no" to both questions. OK, fine - I'm not passing any value judgments, I'm just stating a fact. However, logically speaking, if I am correct about believing Christians not following the Torah on these two extremely important points as a matter of Christian theology, one of the following must be true: 1) either Jesus was in favor of obeying the Torah and most of his followers are ignoring his wishes, or 2) Christians are following his wishes and, as stated above, they are not following the Torah - so, which is it?
You can call me confused if you'd like, but you have to admit that the fact that Christians don't follow the Torah when the creator of their religion said to do so is, in fact, rather confusing.
FYI, Isaiah, 59:21 says: “And as for Me, this is My covenant with them, [the Jews-Ancesthntr] said G-d, My spirit which is upon you [the Jews] and My words that I have placed [past tense] in your mouth will not be withdrawn from your mouth, nor from the mouth of your offspring, nor from the mouth of your offspring’s offspring, said G-d, from this moment and forever.” In other words, the words of the Torah are forever.
Jesus taught the law in the synogogue, even as a child.
Even if Jesus taught the Torah in a synogogue as a child, this by itself doesn't mean that he didn't change his beliefs and practices at a later date. I'm not saying that he did, mind you, I'm just saying that your statement doesn't really prove the point.