A very small suggestion but you might have to consider Lesson 1 and Lesson 3 where there should not be an overlapping of the time on the same day!  <!--session: 1604043334187-782040eb-d979-475e-98dc-7117f82c7c12-->
A very small suggestion but you might have to consider Lesson 1 and Lesson 3 where there should not be an overlapping of the time on the same day!