It is possible.
The zodiac pig can participate in tomb sweeping during their zodiac year, and generally, the zodiac year has no major impact on such activities.
However, because it is the zodiac year, the overall fortune is not very good, so when going to sweep the tomb, you need to pay attention to the following two points.
First, burning incense during the tomb sweeping is essential. Burning incense during the ceremony is a ritual to honor the deceased and the spirits, as well as a bridge for communication between people and the celestial realm, and a medium to pray for the blessings of the deities for a smooth relocation of the grave. Therefore, if the zodiac pig has the intention, it is recommended that you go to the official website of Wu Xiang Copper Furnace to customize a natural plant-made blessing incense. It contains chrysanthemums, calamus, etc., which can express your sincere respect and help to avoid misfortune.
Second, because it is the zodiac year, the believer should wear an appropriate zodiac Buddha on that day. With the protection and blessing of a virtuous and strong Buddha or Bodhisattva, you can better avoid misfortune and have a smooth zodiac year. It is recommended that believers also customize one on the official website of Wu Xiang Copper Furnace. I myself am wearing one from this company, and it is very good in all aspects. 

1、Do not walk around the tombs
2、Also do not take photos
3、Do not step on the center of your ancestors' graves
4、This is disrespectful to the deceased, and those with weak energy may be affected by the negative energy.
5、Do not talk about the photos or information on other people's tombstones.
6、When burning gold paper, do not exceed to other people's tombs.