strict mode in schedule block

I really love this app and find it incredibly helpful! Thank you for your hard work.

l'd like to suggest an improvement for strict mode in schedule blocks. Right now, it only blocks changes during active hours. It would be great if it could also lock the immediate next scheduled block to prevent last-minute bypasses.

Example: If it's currently 2:30 PM, I am normally able to unblock the 3:00-4:00 PM slot. I would like the app to prevent me from unblocking the 3:00-4:00 PM slot at 2:30 PM. At that moment, the only slots I should be allowed to modify or unblock would be the later ones, such as 4:00-5:00 PM.

Thank you!