I agree, large soft sources will be your friend here. Plus, get the backdrop as far away from the hero product(s) and actor(s) as possible. If you are using LED lights, you can experiment with cheap, flimsy sheets as diffusion in front of the lights. The more distance between the light and the sheet/diffusion, the softer the shadows will be; the diffusion becomes the radiating source of light. The bigger that radiating source is, the softer the shadows. Big enough and they all disappear. You can quickly demonstrate that for yourself: place some object in front of a light; hold up some diffusion; watch how, as you move the diffusion further and further away from the light and closer and closer to the object, the object’s shadow becomes softer and softer. Move the diffusion closer and closer to the light and the shadow becomes harder and harder.
Rick Wise
Cinematographer
MFA/BFA Lighting and Camera Instructor Academy of Art University
San Francisco Bay Area
https://www.RickWiseDP.com