VISION THREAD (other than colour vision)

[J500]

Class 1 and Class 2 Dgca meds validity

Hi,

I am a network engineer about to take a plunge into aviation for a Commercial pilot training course. Before that, I need to make sure I meet the Indian DGCA Class 1 standards for medical fitness. I have -4.5D in both eyes which is below the -6.00 standards. To be sure of my fitness, I am planning to take the class 2 and class 1 meds. How long are the class 2 and class 1 dgca meds valid? Also, how soon can I get a Class 1 once I clear the class 2? Any help would be highly appreciated.