Yes. Florida law permits a modification in the amount of child support payments, provided that the party requesting for the modification shows that there is a substantial change in circumstances since the date of the order setting the amount.
Florida Courts have the power to modify/change timesharing schedules. This blog posts discuss the key factors required to modify a visitation schedule.
Florida requires parents to support their minor child. This blog defines child support & the factors considered when determining the child support amount.