Pass through the midst of the camp, and command the people, saying, Prepare food; for within three days you are to pass over this Jordan, to go in to possess the land, which Yahweh your God gives you to possess it.
"Prepare victuals  ..." In this order is seen the near-approach of the cessation of the manna.  Besides that, there is no statement in the O.T. that declares the Israelites to have had no other food except manna.  They surely had the great flocks and herds so often mentioned.