How does a doctor authorize hospice?

My mom is bedridden and I refuse to put her through the process of getting her to a doctor appointment. She has quickly gone into what seems like the final stages of dementia in the last month. She has stopped chewing and is bed ridden most of the day. She has a live in CNA and she is wonderful and has started pureeing her foods. Her GP has her on 10 different meds and clearly nothing is working. One for alzheimers, one for Parkinsons, one for stomach acid, one for increasing appetite, one for anxiety, an inhaler (doesn't need it), one for high blood pressure, one for cholesterol, one for neuropathy (couldn't put her through that painful test so it was really never diagnosed), and a steroid. One moment when mom was awake and aware, she said she didn't feel good...like she was being poisoned. We did not put that idea in her brain and would never do that but the only meds that I can see keeping her on is the BP and the anxiety one. Her body can sometimes cause her pain mostly from lying in the same position. She cannot reposition herself so the caregiver pays close attention to that. Is this a situation for hospice and if so, I cannot vision trying to get her to the doctor for him to authorize it. We do not want her to be in pain and we do want her to be at home and comfortable! During her last doctor visit I was not allowed to ask any questions after the doctor went over 4 questions. He told me he "did not have time for 2 more." I did not see anyone else in the waiting room as we came and went. I do not want her to see him anymore because of that terrible visit. So I am very hesitant on calling his office about anything!