I've had two ptosis surgeries not work, would a third one be more difficult? (photo)

I am wanting to go ahead with a third surgery as I'm desperate to fix this ptosis. However, my surgeon is warning me that a third surgery may not be advised. He says the tissues are much harder to perform surgery on safely and the chances of it being a success are reduced rapidly. I wasn't aware that this surgery couldn't be repeated a number of times, I'm now extremely worried there's a chance I'll never be able to get this fixed, is there any hope? (Healthy 24yr, male)