ISRO had constituted a high-level committee to prepare a report on the proposed Chandrayaan-3.
Sivan said that ISRO is focusing on another moon mission by 2020 for which discussion is on without nothing being finalised.
The 14 Earth days-window or one lunar day, which is the mission life of the lander, ends on September 20-21 by when total darkness sets in.
Lander Vikram, with rover Pragyan, housed inside it, lost communication with ground-station early on September seven during its final descent, just 2.1 kms above the lunar surface.
The scientists have also said it is best to now focus on the orbiter which continues to orbit the moon with its eight payloads intact and functioning normally.
Vikram, with rover 'Pragyan' housed inside it, hit the lunar surface after communication with the ground-stations was lost during its final descent, just 2.1 km above the lunar surface.
The two space agencies plan to put their heads together to find out common factors in the powered descent of both the landers which caused them to lose communication links in the last few moments.
'Vikram' hasn't crashed, communication channel between orbiter and lander is still on: Ex-ISRO Director Sasikumar
After revolving around the Earth's orbit for nearly 23 days, the craft began its journey to the moon on August 14.
Recently, a hilarious video of a man requesting his paragliding instructor to make him land had gone viral on social media.
PM Narendra Modi hugged and consoled a visibly emotional ISRO Chairman K. Sivan on his way out.
Expressing solidarity with the scientific community, Prime Minister Narendra Modi said "India is proud of our scientists", and asked them to be "courageous."
For other members of ISRO its a moment of nervousness filled with excitement as "its not just a historic moment for his organisation but the entire country."
The Lander Vikram of Chandrayaan 2 is named after Dr Vikram A Sarabhai, the father of the Indian Space Programme.
The touch-down of 'Vikram' lander is scheduled between 1.30 am and 2.30 am on Saturday, followed by the rollout of rover 'Pragyan' between 5.30 a.m and 6.30 a.m.
Chandrayaan 2: Here's what will happen during the ‘terrifying 15 minutes’ when moon lander will be on its own
Well, here’s why. ISRO scientists will not resort to remote manual control of the lander while it makes the descent to the lunar surface.