Planning in taking bio mom to court soon for bio dad to change how custody is with 8 year old daughter.
Background info. Father and mother have no custody order in place it has been done privately for almost 7 years. Weekdays with mom and weekend's with dad during school year. Week on and off during summer. Every other year for holidays. Dad pays child support and has never missed a payment. As well as pays for extra thing's for daughter at moms house when needed.
Daughter has had very bad attendance art school every year for last three years. Like missing 18 days or more every year. Tardy more then 10 times a year. Due to mom not dad. Doesn't help her daughter with school work. Dad and stepmom do it all with her. Mom has not taken daughter to Dr or dentist for regular check ups. Dentist for three years and Dr for about the same. Does not use money to take care of needs for child. Mom drops daughter off with either her mom or ex husband most of the time when she has daughter. Talks bad about father as well ads step mom in front of child. Does not Include father in any decisions for daughter. Has not provided much structure or stability.
Father found out about daughter not going to dentist or doctor so starred making apts and taking her himself. Helps with school work when within his home. Always is with him during his time. Never drops her off with others. Provides stable home with structure. No !major life changes in life to affect daughter. Been with girlfriend for 7 years but not married.

Father wants to court go get custody for weekdays so daughter can do better in school. Does he have a good chance?

Any questions feel free to ask