normally drawing will take 1 to 2 month duration ,
If get the key will busy with
-check defect with management
-look for loose furniture
-buy lighting
-renovation
-design

before get the key start plan drawing more easy to step by step to do the renovation .
then get the key
- check defect with management
- look for loose furniture according the drawing
- buy lighting according the m&e
- start renovation
because design settle before get the key .

more easy to workout the renovation .
lot of people said renovation headache because
while get the key suddenly need do lot of thing in the same time they need work then make it headache .

can geh , But after contractor renovation then got any damage on the wall or floor tiles ,
then you have no idea which person damage it , incase any trouble happen , better step by step
after defect done , the contractor start work . cheers