Your symptoms of extreme thirst, fatigue, and dizziness after meals, along with the family history of diabetes, suggest potential issues with glucose metabolism, which Ayurveda recognizes as a disturbance mainly associated with Kapha dosha, although it can also involve Pitta. To support healthy glucose metabolism naturally, it's essential to combine dietary and lifestyle modifications with suitable herbs. Starting with your diet, prioritize whole, unprocessed foods. Incorporate more bitter and astringent foods, as they help balance Kapha and Pitta while supporting digestion. Emphasize seasonal vegetables like bitter gourd, legumes, and whole grains like quinoa or barley. Avoid excessive consumption of refined carbohydrates and sugar, which can spike your blood sugar levels. Including high-fiber foods can enhance glycemic control; consider adding flaxseeds, chia seeds, and green leafy vegetables. In terms of lifestyle, regular physical activity is key. Aim for at least 30 minutes of moderate exercise most days of the week. This helps improve insulin sensitivity and manage energy levels. Additionally, ensure you are getting adequate sleep (7-9 hours) as it plays a crucial role in metabolic function. Practicing stress-relieving techniques such as yoga or meditation can also be beneficial, as stress can negatively impact blood sugar levels. Herbs you mentioned—Gudmar (Gymnema Sylvestre), Fenugreek, and Bitter Gourd—are indeed effective in supporting glucose metabolism. You can incorporate Gudmar in tea form or find it in capsule form. For Fenugreek, soak one tablespoon of seeds overnight, consume them in the morning, or use powdered seeds in cooking to enhance your meals. Bitter Gourd can be consumed as a juice or stir-fried, which enhances its benefits. Lastly, consider an Ayurvedic herbal blend called Triphala, which helps improve digestion and may aid in detoxifying the body. For dosha-specific concerns, consult with an Ayurvedic practitioner for personalized formulations, especially if you consider herbal supplements. In summary, focusing on a balanced diet abundant in fiber and bitter foods, maintaining a routine of physical activity, managing stress, and utilizing targeted herbs can significantly aid in regulating blood sugar levels naturally. Make sure to closely monitor your symptoms and discuss any changes or new treatments with your healthcare provider, especially with the upcoming GTT. It’s crucial to integrate these natural approaches alongside conventional care.