You cannot use the pool before work?
I know after school activities often would not make that possible.
But the reality is that we have time for what is important to us. If our heath is important then we will make time for it.
Example, if one was to have a major heart attack and was told they have to change their diet and exercise on a regular basis or they would not survive another year they would start immediately and never look back.
Make it that much a priority and figure out how you are going to do it. It WILL involve change. Must most of life does not stay the same very long. Change is a constant situation if we are going to keep on track with anything in life.