Is My Shower Cock Stop Leaking ? Can I Change The Ceramic Cartridge ??

[WorsTalentScout]

i can't tell if my shower tap (cock stop) is leaking or not ...............so after showering, the shower head will drip fast for 2 hours, then drip slowly after that...........i put a bucket under the shower head to collect the water for 26 hours the first time.............then 19 hours the second time, but very little water is collected even after 19 hours (most of the water collected is in the first 2 hours)...............

i'm wondering if the leaked water is from the water pipe between the stopcock and the water heater and going through the shower hose and drip from the shower head ?? .............i changed the shower stopcock 3 years ago and 2 other cheaper taps (all same brand) at the same time...............but the 2 cheaper taps are not leaking .........

this is the said leaking stopcock (please see below Shopee link)..........can i remove the handle and change the ceramic cartridge ??.........