Apparently VFS come unannounced as soon as you make the payment online for the courier service within the given timeframe of 3-5 days! No pickup date confirmation or intimation what so ever!
I missed my courier delivery yesterday, and today my envelope is enroute.
Do let us know when you get your passport back from them. As per other threads here, it took around 15-20 days last month, with how things are unfolding for this process right now I am not sure if this timeline holds true for the february month.