When did you know to move on from TFP shoots as a portrait/fashion photographer?

Hi!
I’ve been doing film portraits for a few years now, usually TFP but sometimes paid shoots - the paid ones are generally more run-of-the-mill headshot sessions. I’ve been trying to build my fashion photography portfolio, and I’ve been getting some great projects under my belt with TFP shoots but I’m struggling with when to start charging across the board.

I have a few models with concepts they want to shoot that I also want to shoot since they would be great portfolio images, but every shoot costs at least $100 in film for me alone and it’s not sustainable

I’ve also had some trouble with models from these shoots, wanting to be in control of when and what we post which is annoying to navigate but i plan on getting a contract for these going forward.

For those in similar circumstances, did you just start charging for every shoot across the board? Or do you still do trades if the concept is right?

Thanks!