I am starting radiation in a few weeks. When exactly should I see a swallowing therapist? Before treatment or during and should I arrange for Therabite ahead of treatment?

SCC on left side of tongue 12/01 left partial glossectomy, left neck disection (clean), recurrence 3/06 on back left of tongue, 2nd partial glossectomy, no nodal inolvement, IMRT completed 6/30/06