In most situations a boy becomes a Bar Mitzvah and there are certain practices to mark that occasion which take place on the upcoming Shabbos. Those may include some or all of the following: getting an aliya, reading the Torah and the Haftorah, having a kiddush.
Are there any sources mentioning how to proceed when:
- He becomes a Bar Mitzvah and the next holy day of rest is a Yom Tov?
- His 'bo bayom', the day he actually becomes a Bar Mitzvah, falls out on a Yom Tov?
- The day of his Bo Bayom is a Yom Tov that falls on Shabbos?
Obviously we are dealing with minhagim at best, but is the minhag to specifically engage in these practices on the Shabbos following the day he turns thirteen, or perhaps on any day similar to Shabbos, like Yom Tov.