its actually depend on the layout design ...if all typical floor then should be fast..like PV one, all typical then very fast..
if the design change on the certain floor, the floor may need at least 3 week to complete as the steel formwork might need some modification to cater the new layout..
so to predict the compltion date, normally is 6 month after the tower crane take down..
i guess this project 1.5 years to go