Before you say or do wrong things You may want to run your order past CT divorce counsel--sort out options before you play poker! .
1. If he moves away thats his call but generally he bears all visitation costs.
2. If you move away with child generally you need permission from courts and if you failed to do so you may have some vunerability as to visitation costs --but as I see it only as far as your original site not to next state where Dad moved. Sort of depends on exactly waht your order says--and if you are still in CT / same county.
3. If he was required to provide medical coverage and he cut scope of same I'd say thats an issue to take back before the courts. But what does order say?
4. Who pays what for college? Think ahead?