If you have marks of 300 and above you should wait and prepare for Neet.
I would expect a rise of 15–25% in your marks if you do good.
If marks are on lower side. You can think of going abroad because if you have low marks to expect very high marks will be difficult.
Only issue going abroad is when you come back you need to clear eligibility exam that is very difficult..
So now choice is yours study the pros and cons and try and take the best decision.
Mohd Junaid, Doctor