What are some ways to help my mom enjoy life after diagnosis of dementia (bensons syndrome, Lewy bodies, cbd)?

I feel sorry for U. These r chronic progressive illnesses, just be ;loving and supportive and pray for her..
Day at a time. . There will be good days, there will be bad days. Your job as family is to make sure that your mom has her affairs and support system ready to go for whenever those bad days come. This condition will require multidisciplinary care.