health – Need advice on traveling with Venlafaxine and Vyvanse to India

I am an Indian national living in Australia, I’m planning to visit India for a period of 3 months or more depending on the rules at the time of my departure. While in Australia, I was diagnosed with ADHD and prescribed with Venlafaxine and Vyvanse.

I need advice on:

a] traveling to India with the medication.

b] using my prescription to buy the medication as required.

Also, where should I look for more information?