What therapy would you recommend for in-office treatment of this patient’s hypertonic suboccipital muscles?

What therapy would you recommend for in-office treatment of this patient’s hypertonic suboccipital muscles? James, a 37-year-old male, seeks help for recovering from recurrent bronchitis following pneumonia. He had influenza three months ago and subsequently developed bacterial pneumonia, requiring 2 rounds of antibiotics. Although he cleared pneumonia 2 months ago, he has since experienced persistent fatigue, muscle weakness, digestive issues, and a general feeling of being unwell. He recently had two episodes of bronchitis with symptoms such as fatigue, malaise, chills, dry cough, and soreness in the trachea and upper bronchus areas. He visited urgent care, where a normal chest X-ray ruled out pneumonia. James is requesting assistance in resolving his respiratory symptoms and regaining strength and well-being. He has been consuming a simple diet consisting of instant oatmeal, canned chicken soup, chicken and rice, and crackers. He has experienced difficulty with exercise due to previous injuries. James has no current medications or known allergies. His family and social history, as well as his physical examination, are not provided.