Already filed FAFSA, then discovered UGMA account: How to deal with it?

I should have included this in my previous post: keep in mind that 529 contributions can only be made in cash, so moving the current UGMA stock assets to a 529 account will require selling the stocks and potentially realizing a capital gain that will be taxable income to the UGMA beneficiary (your son). Depending on the amount of any gain, this might also bring the kiddie tax into play.