Since you don't seem to want to answer the questions asked (we can't give you any decent advice without you answering the questions), I am going to give you some general information.
When children are in a stable routine and living environment it is considered to NOT be in their best interests to change that unless there is a material change of circumstance in the life of the child. In other words, changes should be about the best interest of the children, not the best interests of either parent.
Here are a list of potential reasons why a judge might deny a parent's request for more parenting time:
1. If the judge believes that the parent is asking for additonal time in order to reduce or get out of child support.
2. If the parent is not currently exercising all of the time that is alloted to them (ie letting the grandparents have the child most of the time or a significant portion of the time, or simply not exercising the time at all).
3. If the parent cannot be personally present during the extra parenting time they are asking for. (ie the parent works second shift but wants wants the child to be at his home even if he won't be there).
4. If the parent wants to take all of the quality time (ie all of the weekends, all of the school vacations etc) leaving the other parent with all of the "working" time. (the homework, bath, chores and bedtime).
5. The parent lives far enough away from the child's school that getting the child back and forth to school during the additional parenting time would be impractical or hard on the child.
Of course, there would be more potential reasons than just those. Those are just some examples.
Here is a list of potential reason why a judge might be inclined to grant additional parenting time:
1. The parent has less than standard visitation and there is no reason for visitation to be that limited. (ie there is a healthy relationship between the parent and child).
2. The parent wants additional time when the other parent would be working anyway, and can be present for that time. (ie the parent works 1st shift and wants to keep the child after school until the other parent gets home and there is not a level of hostility between the parents to make that unworkable). This is particularly true if the child is struggling with school and the parent is both willing and able to work with them on their school work during that after school time.
3. The child has expressed, independently, a desire to spend more time with the other parent and is mature enough to express that without showing a "grass is greener" mentality.
4. The parents live close enough to each other that additional parenting time would not negatively impact other aspects of the child's life (friends, social life, part time job, after school activities etc, sports)
Again, these are not the only factors, these are just some examples.
The bottom line is it really is all about the child and the child's best interest. Not the best interest of the parents.