You will get that question, in the personal info section, if your birthdate indicates you were under age 24 on 12-31-22.
You will also get that question in the Retirement Savings Contribution Credit interview, under Deductions and Credits / Retirement and Investments.
"5 months" really means parts of 5 calendar months. So, two common examples: you were in college from Jan 31 thru May 1 or from Aug 31 thru Dec 1. Both of those would count as being a full time student for 5 months.
Being a full time student for 5 months means, you can, most likely, still be a "Qualifying child" dependent, regardless of how much income you had. If you can be a dependent, you do not qualify for some tax breaks.
