We are illusioned to believe that all these material relations are real & how to reduce attachment with relations since once I get attached to someone,I cannot forget people & keep on remembering them constant

Can u explain the first one & solve my problem in second one.

no need to reduce the attachment. Just we have to chant and try to love them. And love means to love their soul and to try to help them also to know Krishna. Real love means to take care of the soul and liberate one from cycle of birth and death.

If You love Your relatives then it is good. Just try to give them also knowledge and Prasadam. No need to reject them.