Try to kick the gear to neutral when the bike is still moving
slowly, just before it stops.
If you're using the bike from driving center, try to kick to 1st
gear, switch off the bike by turning the ignition key, then turn it
on again. After that kick up to neutral. I know it works for Hornet
250 and 600, dunno whether it works for 2B practice bikes as well
or not.