Normally, when there is a transition committee, the member then has six months to three years. However, to reach that point, very often, three, four or even five years may go by until the person's condition stabilizes.
Evidence of meeting #12 for National Defence in the 41st Parliament, 2nd Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was families.
A recording is available from Parliament.