It’s not only a Lubavitch Minhag, all Yidden do it, Chassidim, Litfish, Sfardi, Taymani, Modern Orthodox, all yidden start blowing Shofer the 2nd day R”Ch Elul

There are different Minhagim about how many blasts we sound during the month of Elul, the Lubavitch custom is to blow 10 blasts Tashrat (Tekivah Shvarim-Truah Tekiah) Tshat (Tekiah Shvarim Tekiah) & Tarat (Tekiah Truah Tekiah) it’s not only Minhag Lubavitch, from what I understand Chasidei Satmar & Sanz also do 10 blasts, the Litfish & some other Chassidim just do Tashrat, I’m not sure about the Sfardi & Taymani how many they blow, if u know plz share in the comments