I too have the high step but came up with a solution. The first step with the step extended was slightly low @ 7" the second step into RV was 14" and a bear.
I cut 2 pieces of 2X 8 wood boards to fit the entire step area. Drilled a few 1" holes in the 2 pcs to reduce the weight. Drilled 2 holes in the retractable step 1/2" and added 3/8" bolts sticking out ot the bottom of the 2 board assembly that mated up with the holes in the step. Step addition is held in place with a couple of wing nuts. Covered the entire unit with matching indoor/outdoor carpet.
Bolted on during camp set-up...the added step makes the first step @ 9.5" and the second 10". not OSHA approved but much better than stock.
My kids love it as they had big issues getting in before.
Don't forget to pull it off before pulling out though.
Hope this helps.