Originally Posted by bruce19
I could really use some advice.
Hummmm, need more information.
1. what is your average speed?
2. how much of time is spent climbing vs level or descending?
What are your expectations?
-- lose weight as fast as you did before?
-- how long on your spinning classes, ie what distance do you cover?
-- how fast do you think your average speed should be?
-- how fast do you think you should be able to go up hills? of what grade?
Without data, I think your expectations are higher than your training schedule, and you are not making allowance for the longer recovery/strength building time that comes with age.
Since we can't jump start our bodies like a 40 year old, it's extremely important to make reasonable goals and celebrate all successes. Else you'll be back in burnout and be a couch potato again.