Your average sikh in punjab probably has hardly had much contact with a muslim tbh muslims make only around 1% of punjabs population. The Sikhs that witnessed the partition are now really old or dead. So sikhs in pubjab have no ide what it is like living with muslims when their population is large.
Your average sikh in punjab has probably just spoken to kashmiri carpet sellers and gujjars and that's it.
Hindus on the other hand in places like UP know what it's like living with a sizable muslim population, the hindus in Bengal know, delhi, etc same with the Buddhist in Myanmar and us sikhs in the west, basically anyone anywhere in the world where there is a large muslim population knows what it's like!
Whenever sikhs in punjab see acts of violence against muslims in other states they get all defensive of the muslims because they have no idea what it is like living with a large muslim population. That's why sikhs in Malerkotla were protesting against the caa
Once the population of muslims is a big minority in punjab only then will they know what it's like.
Until then there really is not much you can do Other than wait for them to experience it themselves.