Is there a possibility of the NFO’s subscription period being extended?

Yes, Asset Management Companies sometimes extend the subscription period by a few days. To check the timelines for an NFO:
1. Tap Wealth on your home screen.
2. Tap New Fund Offering/NFO under-investment ideas.
3. Browse the open NFOs, and find the fund you would like to invest in.
4. Select the open NFO to see all the timeliness associated with the NFO like open date, closing date, and listing date.