We are in the same boat. So where have you done your flying from ?
1. If you have Indian licence issued and go for any training out of india you need a NOC. NOC is just the syllabus or the things u need to do eg: if you go for recency then it will be like 2 hrs dual 2 hrs pic 1 hr pattern....1 hr night something like that so get ( to be on safer side ).. u know how our DGCA is
2. why do you have to change ur logbook ? no need
all the best.