How to go to the other round of two loop at the same time? : How to go to the other round of two loop at the same time?

code :

    parameters = {'CT', 'Imp', 'F1', 'F2'};
    
    Time = {'T0', 'T1', 'T2', 'T3', 'T4', 'T5', 'T6'};
    for i_parameters = 1: numel(parameters)
        my_parameters = parameters{i_parameters};
         
        
        for i_Time = 1 : numel (Time) 
            my_time = Time{i_Time};
            
        for j = 1 : 7
        
        Difference.(my_parameters).(my_time) = [Diff.(my_parameters)(:,j); Diff.(my_parameters)(:,j+7); Diff.(my_parameters)(:,j+14); Diff.(my_parameters)(:,j+21); Diff.(my_parameters)(:,j+28)];
            
        
        DiffMean.(my_parameters).(my_time) = mean(Difference.(my_parameters).(my_time));
        Diffstd.(my_parameters).(my_time) = std(Difference.(my_parameters).(my_time));
        
        end 
  
        end
    end


I would like to leave the loops `i` and` i_Time` at each turn and at the same time that I would like to apply: `i_Time = T0 then j = 1 / i_Time = T1 then j = 2 / i_Time = T2 then j = 3 / i_Time = T3 then j = 4 / i_Time = T4 then j = 5 / i_Time = T5 then j = 6 / i_Time = T6 then j = 7`
