Awe poor thing. I remember when when my cat frisky was overweight. The vet said I had to put her on.a diet and give her exercise.
Well I tried making her climb 14 stairs by keeping her food in a different place.
Poor think looked like she was going to fall out.
So we started taking to steps at a time. She would climb 2 steps and fall out with her head in the food bowl. Then she would take her paw and eat the food with her head still in the bowl.
I told her we were both so lazy. She just looked at me.