In some instances, the disfellowshipped family member may still be living in the same home as part of the immediate household. Since his being disfellowshipped does not sever the family ties, normal day-to-day family activities and dealings may continue. Yet, by his course, the individual has chosen to break the spiritual bond between him and his believing family. So loyal family members can no longer have spiritual fellowship with him. For example, if the disfellowshipped one is present, he would not participate when the family gets together for family worship. However, if the disfellowshipped one is a minor child, the parents are still responsible to instruct and discipline him. Hence, loving parents may arrange to conduct a Bible study with the child.*—Proverbs 6:20-22;29:17.
https://wol.jw.org/en/wol/d/r1/lp-e/1102008083