How hard will it be to get my child support amount changed? I am going from hte military to a police officer and I believe my support payment will go from around $723 a month to $600. I am getting out so I can see my daughter more. I will be working a 14 day work schedule with 3 days on and 4 off and 4 days on 3 off and so on. All and any help would be appreciated. I am in Illinois.