If it is done under the guidance of an expert then do not worry. One should also put in efforts to maintain good health by daily exercise and eating a healthy and balanced diet. Drink 8-10 glasses of water and avoid bad habits.
Extension Exercises x 15 times x twice daily - lying on tummy, take left arm up for 3 seconds, then bring it down, right arm up for 3 seconds, bring down. Bring right leg up, hold for 3 seconds, bring it down. Then right leg up and hold for 3 seconds and bring it down. Repeat twice a day- 10 times. Bhujang Asana – Lie flat on your stomach, keeping the palms out, bend the neck backward, take a deep breath and while holding it for 6 seconds, raise the chest up. Release breath and relax your body. Repeat the exercise 15 times twice daily.
it depends on your daily routine also.
But I would suggest you to do not lose hope.
First of all you mentioned" therapy" does that stands for physiotherapy because now a days quack / fake physios are there in market selling chyong india, seregeum therapy, claiming themselves Dr. I would suggest you to visit the best physio in town. Or consult here.
Because physiotherapy is the last option before going to surgery or steroid injections. Regards.