I own a house outside of the USA along with my soon to be ex. During mediation I agreed to gift it to son. The idea was to keep the child support little less in return for that property. It is valued at 300k. But, I made a mistake of not adding anything to mediation document saying my share of the property is being gifted to my son in return for a lesser child support. We did not sign the divorce decree yet. Is it possible to legally make that added to the divorce decree or did screw my self ?

Also, I will pay for medical insurance for my son. In future god forbid if anything thing happens, do both parents share medical expenses or is it just the dad paying for everything?