The Bible is clear that Salvation through Jesus Christ is offered first to the Jews and then the Gentiles. To say that Jews should not convert to the Catholic Church Jesus Christ established is to ignore the Bible.
To those who have not yet received the Gospel under the section of “The Church and Non-Christians” you can read the CCC paragraphs 839-840 for details on how the Catholic Church views Non-Catholic Jews.
There are plenty of Jewish Converts to the Catholic Church - all of the Apostles, Mary, most of the Christians mentioned in the New Testament, more recently Edith Stein, Rosaline Moss and David … I forget his last name now, he wrote a beautiful booklet on the Rosary from a Jewish persective that I read years and years ago. Just the other evening driving home I listened to Immaculate Heart Radio and listened to a Jewish gentleman who is a convert to the Catholic Church as he gave an excellent Bible Study - saying that the greatest Jewish Prayer begins with the word “Hear”, not “talk”, not “do”. I think the Prayer was “Hear, O Israel, that God is One” or something like that. It was a great study on Martha and Mary where one sister was busy “doing” while the other sat at Jesus feet and “Listened”.
For those Jews who have not heard the Gospel, then their possibility of salvation is between them and God as described in the CCC paragraphs 846-848. For anyone, especially the Jews, who have heard the Gospel have the responsibility above the Gentiles to accept Christ and become Catholic since Jesus came for the Jews first, then the Gentiles as the Gospels and the New Testament says.