Do not make any promises that you cannot keep. For example, don't promise that when you move the child can have a pet if that's not going to happen. If a parent breaks a promise, the child will find it harder to trust them. Try not to buy a new bed or other furniture during this period. New things create a feeling of insecurity.
Old things are familiar and create a feeling of security.
If possible, it can be a good idea for the child to spend moving day with friends or relatives. Otherwise, they may feel left out or in the way because Mum and Dad are so busy. The big question when you have a school-age child is whether they will like their new school and make new friends. It is debatable whether it is better to move during the school year or the summer holidays. If the change of school takes place over the summer, the child has more time to get used to the idea and has a fresh start with the rest of the children.