Hi Thank you for posting your query.I have gone through your details According to my opinion there are many natural ways and remedies to reduce weight .Weight gain or 
weight loss depends upon your 
basal metabolic rate.In order to reduce your weight you have to keep proper digestion by following proper diet and if you have any digestion related issues like 
constipation,gas,acidity you have to cure that first by natural remedies or yoga or medicines.Here I m giving few remedies which you can follow for proper 
metabolism and weight loss
Have low calorie food,green vegetables,salads,fresh fruits in your diet.
Avoid fruits like mango,banana,litchi,grapes in your diet.
Avoid dairy products like cheese,paneer,ghee,butter
Have 
aloe vera juice empty stomach daily.
Have honey with lime and lukewarm water daily
Start taking ayurvedic preparations like medohar guggul,arogyavardhini vati,trikatu churn,triphla churn  after consultation with doctor.
Yoga asanas  and pranayam are very effective .You can practise under guidance of yoga expert.
Highly recommended treatment is UDVARTAN in which medicated herbs for weight loss are used in powder form all over the body.It helps in reducing weight fast .
If you need further information you can contact anytime.
Best wishes!
Regards
Dr.Pallavi