As the token Jew here who happens to agree with gentile Christians that Yeshua was/is the Messiah, I would concur that the balance of authorities is that Jews should continue to follow the Law, as that is special contract with the people.
I do it cheifly to avoid conflict with my family, who are extremely observant, and it keeps the peace.
Yes, it is like my wife, who is ex-catholic, when she visits the family in Chicago and goes to the Catholic Church with them, still recites stuff, uses the kneepad thingee and takes the wafer and wine. None of that is “against” Christ to do those things, but she sees them as mere window dressing and no longer believes in tha eucharist stuff, but very MUCH believes in communion.
She does NOT pray to Mary though. For Christians, CHRIST is the Intercessor, not Mary.
BTW, regarding the “special contract”, in Christianity I do not believe there is a “special contrct” between God and some Christians and not others. I think what we are primarily talking about regarding Jews who are now Christian, is “religious culture” differences. After all, there is “neither Jew nor Greek...”.
In rereading your post I realized that when you said “...Jews should continue...” I incorrectly inferred “Christian Jews”.
I cuncur with your post.