Seniors and students

This is my first year doing income splitting. The pension amount is only one cheque $5414. I know i can only take half. Why does the program only give me $225. Wouldn't it be in my husbands best interest to put half on me as i am in a lower tax bracket? Taking half does nit put me in  higher bracket. Do i change it manually? Or am i missing something? The struggle is real. Help