From the Hebrew Scriptures, including the Talmud we can learn that the Chosen People or Israel is eternal, so the bond with them is irreversible, unbreakable and eternal, once a Jew always a Jew. As a Jew following the Jewish rebbe Jeshua should not mean that one has to give up the Jewishness, even better being a follower of the sent one of God one can become even closer to God.
People should know there is a big difference between trinitarian "Jews for Jesus" and those Jews who believe in Jeshua as their Messiah but who worship the Only One True God of Israel.
Coming closer to the end-times we can see many signs indicated in the Bible to be a warning for a big trouble to come. After a Great War the Kingdom of God shall become a reality by which Jerusalem shall be the capital of that Kingdom and Jews shall find peace in the Promised Land, but it is not to man to decide which city and when this capital shall be there forGod's people to live alone or with others.
Looking at the results of two surveys (one from 2013 and one from 2017) which mainly looked at one group of "Messianic Jews" instead of looking at all sorts of millennial Jews.