JFC, just send them what they need already. At this point, it looks a lot like the support is just so that we can collect the payments later while extending the war. Thus ensuring Ukraine's continuing need for military support and future debts to be repaid.
They should have been trained on F-16s by a year ago now. You can train before you promise or send something. It's absolutely shameful how poorly we have helped Ukraine in this time of need.