Stop them and consult a different psychiatrist. Zolpidem can cause disturbance and altered behavior, it can also be due to fever. So getting a second opinion is worth it. Good luck.

A detailed evaluation of patient is required to understand indication of these medicines.

Sleep has many restorative properties and is a highly important component of routine. I assume there was a recent infection of some sort based on the history of antibiotic treatment sought. Age, any comorbidities, recent infections, and disruptions to his vegetative routine—such as less sleep—can all contribute to changes in sensorium. Nevertheless, the history is still not enough to pinpoint the exact problem. However, if he isn't improving with the aforementioned medications, a treatment revision is unquestionably necessary.

Hi.. will need further history regarding the same to advise appropriately. It could be organic causes in old age.