1. Do not stop Istamet XR without consulting your doctor: Abruptly stopping Metformin and Sitagliptin can disrupt blood sugar control.

2. Adjusting insulin dosage: Increasing Novomix may be necessary if blood sugar is high, but only adjust based on monitoring and medical advice.

3. Monitor blood sugar closely: Illness can cause fluctuations, so frequent checks are crucial.

4. Consult your healthcare provider: They can offer personalized advice on medication adjustments during your infection.

In summary, do not change your diabetes medications on your own. Contact your healthcare provider for guidance tailored to your condition.