I guess the issue is with charger or the USB C port, if I unplug it and replug the cable it starts to charge the device at ideal speed like the estimated time went from 1hr35mins to 40mins from 20%-100%. The battery live is good BTW 9hrs screen time or a solid day in a single charge.
I’ve never used my device while charging and I even turn off WiFi/mobile data/bluetooth while charging the device.