It sounds like while your anxiety symptoms have been addressed to some extent, the higher dose of Sertraline (150 mg) may be contributing to persistent side effects such as reduced appetite, sleep disturbance, palpitations, and weight loss. In some people, SSRIs can worsen these issues at higher doses.
Next Steps
Since you felt partial relief with lower doses, it is important to share this with your treating psychiatrist. Sometimes, reducing the Sertraline dose or switching/augmenting with medicines like Mirtazapine or Prothiaden (which can improve sleep and appetite) may be considered. However, any changes should only be made by your doctor after reviewing your case in detail.
Health Tips
Please do not adjust your medication on your own. Keep track of your symptoms, appetite, and sleep patterns, and discuss these observations during follow-up. With the right adjustments, it is possible to find a treatment balance that controls anxiety without worsening physical health.