I have the same steps for my bed.  Sprout had no problem up or down the stairs.  Polly whould go up but not down, she would bark for me to come and get he off.  When I would come and get her I would walk her down the stairs.  I thought she would never go down, but one day she did and hasn't stopped using them.  I would give him a little time and he will get the hang of coming down.        |