Hi, Welcome to HCM,
Hollow Cheeks are definitely a thing of concern for Indian girls as we like more of round face/ Chubby cheeks.
The best available treatment though is either fillers ( injections containing hyaluroinic acid which fills the facial linings and hollow cheeks) or by Plastic surgery
(implanting your own fat). But both are quite expensive procedure needing expert person to do it.
There is no oral medicine or oral food supplements available to make your cheeks chubby. So don't get carried away by any advertizements related to this. You even may harm your body by such kind of fake things as some these may contain anabolic steroids
Yes, your main treatment is - Diet, Diet & Diet...that too good nourishing diet. This is the most time tested thing in this world since ages. Now what to eat is - everything which you like - but with good caloric index. It means high energy food with good amount of proteins
& fats. You are quite learned lady who don't need explanations on high energy food or can consult a dietician for the guidance. But even then you can follow the regimen below:
Take multiple small feeds/ day.
Eat 3-4 fruits/day.
Take sprouts if you are vegetarian or can take eggs also.
10-15 almonds overnight soaked in water.
Eat and drink milk and milk products in plenty.
Do not forget to do yoga
or exercises also.
If you try and follow above, gradually after a period of 3 -6 months you would be able to see good changes. Even if you do not see much change then slightest change is also a win - win situation.
With best of dietary wishes,
Dr Sanjay Kanodia