Locking In Objects, locking in the same photo style

Hi, 

I love the tool. I just have problems that my object (in this case our bottle) gets changed sometimes in the videos, sometiimes not. It would be great if we could lock a certain object to remain the same.

also I would like to lock in a style - in my case photo realistic as the follow up videos look too different so I cannot combine them.

Best & Cheers