sando, I haven't heard of anyone taking Forteo after Evenity. And can't find anyone advising that sequence. Looking at the loss charts and the mechanisms of action, Forteo after Evenity seems most sensible to me.
Your surgeon may prescribe Forteo during your treatment. Which would protect your jaw and help secure your partials.
Your request is sane and she probably won't like it. You might present it in terms of advancing jaw healing during surgery. You may have better luck with the surgeon.
While it is important to follow up Evenity with something, it seems mistaken to follow an antiresporptive with an antiresorptive, even granting that they work in different ways.
looking at charts of bone loss after Evenity, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6877701/ figure 3 column 1 indicates the percentge of loss in months if taking nothing after Eventiy https://www.ncbi.nlm.nih.gov/core/lw/2.0/html/tileshop_pmc/tileshop_pmc_inline.html?title=Click%20on%20image%20to%20zoom&p=PMC3&id=6877701_198_2019_5146_Fig3_HTML.jpg
There were 46 women who took Forteo after Evenity, but those results weren't included in the study.
I consider your best bet to ask for several months of Forteo during surgery. I would ask both the unhappy physician and the surgeon. Then proceed with the surgery at a comfortable pace with or without Forteo.
In this study the women who took nothing for a year after Evenity and then had a second dose of Evenity had better results than those following with Prolia. Curiously.
I'm afraid this is tooo much information. And not so very helpful or supportive of your quest. But I also think you 'll be safe during treatment. I'd love to see your bone markers during this time. Maybe you should request them prior and then monthly during treatment to acertain whether you need to pause treatment. And so I could look at them. Bless your quest with luck.