FightOnToVictorry - Congratulations on receiving a medical waiver! This is just one step in the process toward an appointment.
You should use this opportunity to give your Regional Commander a call. Waivers are sought at the discretion of Regional Commanders for competitive candidates. He can give you a good idea of where you stand in the process. In any case, you are now in a position for an offer to be made!
Harrison - waivers can happen at any time. Have you received paperwork from DoDMERB informing you that a waiver is being sought by USMA? As I recall, my daughter received her letter in early March the year she applied. She got her waiver a week later. It is all different for each candidate.
As I said above, waivers are initiated by the Regional Commander and each candidate is different.