DD loves swimming, she swims at the local swim club for 45 mins per week, and also does a junior lifeguarding course at the local pool (30 mins pw)
Swimming club letters have just come out for next term and DD is being moved up to the next level. The club offers 4 sessions, that will total 7 hours pw if she does them all 
So my question is, what do you think would be reasonable amount to swim? Advice from any MNers with children in swimming clubs would be particularly welcomed, but I'm open to all views TIA.