Q-learning movement restriction

I am Implementing Q learning on 5 x 5 grid using the following code.

%% Create Grid
GW = createGridWorld(5,5);
GW.CurrentState = '[1,1]';
GW.TerminalStates = '[5,1]'
GW.ObstacleStates = ["[3,1]";"[3,2]";"[3,3]"];
updateStateTranstionForObstacles(GW)
GW.T(state2idx(GW,"[2,2]"),:,:) = 0;
GW.T(state2idx(GW,"[2,2]"),state2idx(GW,"[4,2]"),:) = 1;
  

It creates a 5 x 5 grid starts from [1,1] and termnates at [5,1]. I want the starting point random in this 5 x 5 grid and it only move around its 8 neighbours and terminate.