I consider extension as SANJEEVANI, stick to pre till 20 May. As I have attended SFG 1 and found the Environment SnT and eco need extra effort. I start solving the SFG Test of both batches of above said topics in a same manner as it was in Forumias with similar degree of discipline. After 20 May, schedule myself as per the time given for PT.
@Neyawn sir suggest me, if any, a better strategy