[OH] Advise on how to go about review of parental plan.

So basically I have a 7 year old son. Whom currently I have 50/50 shared parenting but the mother is residential and lives an hour away. Given from the ages of 2-4 I had him 5-6 nights a week because she had to work and I did from home at the time. Then when kindergarten started I obviously couldn’t have him on school nights being his mom was a hour away. In our parental plan we are supposed to be 50/50 on all expenses which I have always had to pay all of his sports equipment, fees, and anything that came up. The past couple years we haven’t went fully with the plan as I have him every weekend. So her and her new baby daddy were house poor bc they overbought. Long story short they sell the house so they aren’t foreclosed on and move into his parents with their kid. She tells me I can have him for the summer but signs him up for football right after we just finished our baseball season( 3-4 nights a week after work id have to drive all the way out there bc I was coaching) she doesn’t have a room for him where she’s staying and it would be way more convenient for me and less stressful on him if I could get residential and sign him up for school and sports here. He’s expressed he’s excited to go to school here and I have a way bigger and better support group around me than her. What are the options to go about this. Have my lawyer introduce a new parental plan or ask her.