How do I make Gemini consistently remove the woman?

I need to remove the woman so I can upload it on Sora 2 and then make a video, but Gemini doesn’t do what I ask. I try to make her turn into a glass mannequin he kind of gets it right, but the main problem is that Sora glitches about 40% of the time when I use a mannequin. I want to make only the woman disappear, but her body and shape must stay under the outfit. Gemini doesn’t understand and keeps doing it wrong or sending me back the image I uploaded. This is draining all my mental energy and making think Gemini is dumb asf, I need to make 15–20 of these videos daily, the image creation needs to take a maximum of 3/5 minutes, but in these cases it takes 20 minutes just to create a single usable image.
(Sora 2 doesn’t accept uploaded images that has humans in it)