Q: Is it permissible to make the niyyah (intention) to start the fast before time, or can we read it when we are finished eating even if that is 30 minutes before Sehri ends?
A: The Niyyah will be made after eating, even if it is a while before Sehri ends. If the person eats or drinks again after the Niyyah but before Sehri ends, the fast will not be affected but the Niyyah will be renewed.
Moulana Yusuf Laher