As the comment by @dandavis suggests, lowering the range might get the knobs below the ends of the handgrips of the wheelchair. This would also make it easier to use the stove top.
The raised edge around the top of the range is conventionally placed in the same plane as the top of the counter. From your picture it appears that your range is = or > 1" higher than that. The stove top could even be below the counter top, it just would reveal the edge of the counter.
On some ranges the height can be adjusted without pulling out the range. If a range has a storage drawer on the bottom, removing it will allow access to the back feet. But even if you have to pull the range out to adjust the back feet, this should be done.
I just examined the front feet on our 30-year-old GE electric slide-in* range. On one side of our range one front foot is almost at the lowest setting! The mfgrs of these ranges don't seem to have provided sufficient downward limit for adjustment.
This is surprising to me and intensely irritating. If I had to adjust it lower, I would remove that foot entirely and level the range with the other three feet. This might give the required extra lowering to get the knobs below the handles. To make this work you might have to put a metal shim under the position with the removed foot. This shim could be designed to prevent scratching of the floor when the range was slid out.
*Your range looks like it is a "freestanding" range (does not overlap the counter and has finished sides).