I think you should have the implant, I'm not sure you should take Prolia. The trouble with Prolia is that it prevents your bones from remodeling. Eventually your bones become avascular. So the bones are brittle because they haven't been renewed and then they become even more brittle. Many oral surgeons won't do surgery for patients on Prolia. Prolia weakens the immune system which makes you more susceptible to the ever-present germs in your mouth. Often we get antibiotics. But on Prolia there isn't the vascular system to take the antibiotic to a bone infection. All the bone can do is decay. There is a risk of osteonecrosis of the jaw with the use of Prolia.
Some never experience this and since you are just beginning Prolia, you might escape unharmed. But there is the risk of osteonecrosis with Evenity. So you might be set-up for harm. You might talk to you endocrinologist about pausing a month and starting Prolia at the end of September. It is safer if you've already had the root canal on that tooth. You probably know that once you start Prolia, it is difficult to stop the medication.