Regarding pulmonary fibrosis. That?

My mother recently got covid 19 infection. There was acute respiratory distress and oxygen level was 85 @ 15 Liter oxygen. She was in ICU for 7 days on NIV. Viral pneumonia with CT score 13 out of 25 was there. CRP was 108 and Tocilizumab was given. Along with this steroids and remedisevir was also given with lot of other medicines. Now she has recovered and discharged from the hospital. Xray still showing the bilateral pulmonary fibrosis. Hence doctor prescribed Nintenanib. My mother has history of hypertension and heart rate usually remains 60-65. With antifibrotic Nintenanib it is increasing to 85. What should I do? Aspist covid complications could be there what precautions should we take to avoid that? Kindly help