I haven't had Evenity treatment, but I had one shot of Prolia, and my hair was coming out in clumps. I was devistated. Some people have no side effects. No one can definitively say what reaction an individual might have to any given drug. We're all different. You know your body far better than your rheumatologist. After all, you spend all day every day with it. 😉
With Prolia, the more shots you get, the more problematic it is to stop, so I stopped after just one. With Evenity, I don't think it's an issue to stop at any point. Don't quote me on that, but I feel fairly confident that it's not an issue. Because of this, you might consider continuing the treatment while looking for a way to counter the hair loss issue. Only you can make that call.
I found a way to slow my hair loss. I'm losing less than I was even before the Prolia shot. It may not work for everyone, but it has done wonders for me. It takes about three months of use to really start seeing the results, so I had to be patient, but it's paying off.
I'm using Pura d'Or Original Gold Label Anti-Hair Thinning Biotin Shampoo. I bought it from their eBay store. It's also available direct from the company website as well as from other reputable sites like Swanson. After reading reviews on Amazon, I wouldn't buy it from them. Some buyers think they're receiving knock-offs. Crazy to think that someone is making shampoo knock-offs. True or not, I'm not going to risk it.

Here's the eBay link: https://www.ebay.com/itm/171480268685?epid=6026728573&hash=item27ed053f8d:g:PoEAAOSwrNdj68hR

Here's the company website link: https://purador.com/products/original-gold-label-shampoo?_pos=2&_sid=735a4fe8f&_ss=r

and Swanson: https://www.swansonvitamins.com/p/pura-dor-original-gold-label-anti-hair-thinning-shampoo-16-fl-oz-liquid?SourceCode=INTL4071&showPopup=f&medium=Shopping&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping%20-%20Smart%20-%20Beauty%20&%20Personal%20Care&utm_term=4582352181253791&utm_content=Beauty%20

FYI, you get free shipping when you buy it from their eBay store.

I can't imagine how devastating it would be to start losing your hair, but trust me, you can always buy a good wig, or try the product given by another reply, or hopefully it will come back but you cannot buy a new hip or a new spine. Evenity is considered one of the last hope drugs, please do not cancel your injections.

I have had 7 injections so far and my hair starting falling out a few months ago. Not sure if I should stop treatment or just hope my hair grows back after the treatments.