When you're pursuing CA and are in the phase of your article ship, you're required to fill a form that's signed by the college giving you permission to leave by your office timing. Only then is the article ship registered with ICAI. So even if there are lectures post 1030, you can bunk and you'll still get attendance.
If you want to join classes for ipcc or finals then join the night batch. NM is very strict about attendance. In case you've already joined the day batch then it's preferable to go to colleges like mithibai which are not very strict about attendance