Mr. Gaurav Chanana
As per your chart, the longevity of your mother would be in danger in the period 20-12-2025 to 9-10-2026. At that time Jupiter dasa Sun bhukti will operate. So first you pray to your family deity and propitiation to Sun god. Next Rudrabhishekam will help you. Daily listen her Adityahridayam.
Good Luck
JVS Rao