Many thanks for the insight.
As of now, not a major slipping issue, however, the gear shift is not smooth like earlier especially the downshift makes some noise and at times, gear engagement is a bit-off after a shift (not sure if this issue is related though). At times, the engines at lower speeds as well. The total mileage is 62,000 km as of now. mechanic suggested clutch assembly change...but the price was a bit steep. have clarified with mechanic if i can drag it a bit more which seems not a problem.
alternative is to order online from a shop in KL that supplies these parts.. it was relatively half price. not sure how much workshops will charge for changing it.