Can I go to the grave during the Spring Festival less than 100 days after my mother died? Hebei Province

In the rural areas of my hometown, the custom of my hometown is that the deceased is less than 100 days old, which is in line with the solar terms of Qingming/July 15th/October 1st. Living relatives don't go to the grave, because Qingming, July 15th and October 1st are unified ghost festivals, and the cycle of the deceased (the seventh day, the seventh day, the fifth day, the seventh day, the seventh day and the hundred days) is longer than ordinary ghost festivals. You can go to the grave after the Hundred Days Ghost Festival. As for more specific taboos, I don't know.