Oh yes, you don’t have to worry about that. You can start studying whenever you want for your PG and it’s never too late…
medical college studies are theoretical and clinical. Meanwhile for neet pg you have to cram the entire MCQ books of all the subjects… there are many examples in every medical college where the honours students and the most studious ones cannot clear the pg exams.
that’s because the style of reading is different in both the cases. It’s up to you how you strike that balance and make sure to do well in both.