Hi, you can always change in between the counselling. So, when your first counselling results are out you get a time duration and during that duration you can change your priorities and courses when you want to. You can again do it in between second and third round of counselling. Since, last year the cut-off was less you are expected to get a seat in Don Bosco in second last or last round. If you still have any doubts feel free to comment. Hope this helps.