The race between the weight and the wheelchair

I was recently told by my orthopedic doctor that he expects me to be confined to a wheelchair within the next year to two years. He says that it isn't common for someone my age to have such severe arthritis in both knees and both hips. He says that my worst hip will be what cripples me, and the only way I would be able to keep walking is if I were to have a hip replacement before it gets much worse.

Unfortunately, they don't operate on people who are as heavy as me. Although he didn't give me an exact figure, it was more or less implied that I will need to lose around 100 pounds in order to have the surgery.

I have been struggling with my weight for a long time and have had trouble getting around since I was injured about 15 years ago. This makes it very difficult for me to get the exercise I need, and as hard as I try, the weight doesn't come off very quickly. At this time it is a race between the weight and the wheelchair. I could use all the prayers I could get right now, as I fight to stay out of the wheelchair.