Discuss it with your patient what they would prefer first. Find out what surgery they are referring to - if it's a manipulation under anaesthetic or if it's something else. This way you can give your patient the options.
The conservative option of increasing the stretching is probably more desireable - remember we can increase tolerance to stretch but to cause growth of more sarcomeres and actual muscle lenthening then the stretching needs to amount to many hours a day to place the demand on the body required to initiate new growth of muscle.