You need to cross Babusar before sunset but convoy is not required on Babusar route.
Some people on cars have done it around 4 hours this year. But normally it will take 5-5 30 hrs.
If you start from Fairy Meadows at sunrise then you will be ready to depart from Raikot by 8-9 a.m.
Couple of hours till Chilas and then 5-6 hours till Naran and you should be able to make it easily.