Yes, a will can generally be changed or revoked after it has been made, provided the person making the will (the testator) is alive and has the required mental capacity to understand the changes.
In India, a person can modify an existing will by making a codicil or can revoke the old will and create a new one. A later valid will generally takes precedence over an earlier will to the extent that the two are inconsistent.
For example, if a person originally leaves a property to one child but later decides to leave it to another child, they can update their will accordingly. The new will should be properly executed and witnessed according to applicable legal requirements.
It is also important to ensure that the latest will clearly reflects the person's intentions and does not create confusion about which document is the final will. If there are concerns about disputes among family members, consulting a qualified succession or estate lawyer can be helpful.
In short: A will is not necessarily permanent. It can be changed, supplemented, or revoked during the testator's lifetime, subject to applicable law and the person's capacity to make the change.