My spouse's T2022A only states 4 months and I need a weekly breakdown in order to split child care expenses. Should I enter the 13 weeks of actual class time or the full 17 weeks from September to December?
You should enter 13 weeks. The number of weeks is for the time 'the other person attended school and was enrolled in an educational program'. 'Full-time' requires students to spend at least 10 hours a week on courses or work in the program.