SOPP482: Are pedal arpeggios supposed to be all legato?

This question was sent by Susan. she writes: Hello Dr. V. I have subscribed to the pedal virtuoso master course. I am 76 years old, started playing organ after retiring from a non-musical career at age 70. I have taken organ lessons for 5 winter seasons in Florida (I am a snow-bird). I have fibromyalgia and found after week 1 of pedal exercises that my legs were very sore and tired; can deal with the soreness, but fatigue make them want to give out. Week 2 I could only practice every other day. Week 3 I did not start, because I had to continue to practice and be able to play for weekly church service, plus this past week was practicing for a funeral service. So now I am a week behind. Do you think I should continue this course? Also, regarding the lessons—are the arpeggios supposed to be all legato? I wear size 10 1/2 shoe but still find it difficult to reach g to c. Thank you for your consideration of my problems. Susan