My Husband Was Diagnosed With Severe Aeortic Stenosis, Then He

My husband was diagnosed with severe aeortic stenosis, then he had a bout of low low hemoglobin which was caused by esophageal cancer. Now it has metastisis to the liver, What is the prognosis?
The specialist said to do whatever you always wanted and get your affairs in order. We did not get a time limit. Family Is trying to cope and wonders if we have 6 weeks, 6 months or ?????????