Hi Gazal,
We are new to this forum. We are visiting the Trivandrum area around the same time.
Ours is a four day trip.Our suggestion would be to club the following places (We are doing Day 1,2,4,5) assuming Trivandrum as base :
Day 1 : Places within Trivandrum city ( Zoo, museums, temples, Shanghumugham beach) - Center
Day 2 : Ponmudi and Meenmutty falls - North east
Day 3 : Neyyar wildlife and surrounding attractions - East
Day 4: Varkala, Ashtamudi and Anjengo fort - North
Day 5 : Kovalam and Poovar - South
Day 6 : Kanyakumari - Down South