If you have not filed, here are the steps (online):

• Sign into your account, select Take me to my return
• To the right upper corner, in the search box, type in "schedule a" and Enter
• Select Jump to schedule a
• Follow prompts.  You will see the screen Now it's time for the fun part-Your tax breaks, scroll down the screen to edit the section or select skip to see all tax breaks.  See the attached screenshot