Got the bike serviced and few things changed:
Clutch and Pressure plates
Accelerator, Clutch and Speedometer wire
Front shocker oil and seals
Total bill Rs.1350
Things still left to be changed:
Rear tyre (FKR 120/80×18)
Rest I think I can do without also got Caltex Revtex 20w50 engine oil put in my motorcycle. She is back running at almost 90% of her optimum level which I could tell in the short ride home. Acceleration is clean from 2500rpm in 5th gear without any jerks. Few kinks still left to be worked out and hopefully will be done in a week or so.