<h2 id="5-the-shabbos-before-the-bar-mitzvah-1">5. The Shabbos before the Bar Mitzvah : [1]</h2>
On the Shabbos before the Bar Mitzvah, some communities are accustomed to give him the Aliyah of Maftir.<a href="#_ftn2" name="_ftnref2">[2]</a> This is not the Chabad custom.
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<a href="#_ftnref1" name="_ftn1">[1]</a> See Nitei Gavriel chapter 6
<a href="#_ftnref2" name="_ftn2">[2]</a> Levushei Mordechai 1:37; See Tzitz Eliezer 7:1; Piskeiy Teshuvos 282:8 and footnote 87 and 92 that the Shabbos before the Bar Mitzvah some say one may be lenient even regarding Maftir of the four Parshiyos; See also Piskeiy Teshuvos ibid and 284:2 and Poskim in footnote 16

Shulchan Aruch HaRav | The Shabbos before the Bar Mitzvah

5. The Shabbos before the Bar Mitzvah:[1] On the Shabbos before the Bar Mitzvah, some communities are accustomed to give him the Aliyah of Maftir.[2] This is not the Chabad custom.