I do find myself getting more tired so my husband has gone back to walking him over the fields in the morning (30-40 mins off lead) then I walk him again later in the day and he gets a last walk just before bedtime. So he is not getting any less than before. Probably more with me throwing the ball in the garden and him following me about!!
Top Barks - I agree with you about the radio thing. I did try that for a bit but was sure that Lewis saw it as a 'she's going out signal'! Been reading Jean Donaldson's Culture Clash book which is very interesting.