Isca & costing still untouch

Think of utilizing the remaining fifteen odd days in a more constructive and positive way. You have done all the hard work and now do not give up at this final moment. Believe in your inner strength and surely you are bound to reach your goal. Wish you best of luck.

PM for ISCA no doubt ...learn the headings by heart, seriously its worth it !

And for costing, read as many as question you can .....even if you can't solve you can have good grasp of questions enough to handle the technicalities. 

You have twenty days left and two subjects are untouch(ed).

The encouragement you are getting to face a professional exam is amazing

Best of luck