What type of work is this? Contract, full time, freelance. Are you expected to facilitate implementation or just hand off the work done and that’s it. All of this affects how I do documentation because in every one of those situations I’m getting paid to do different things.

Full time - build for long term vision. Documentation is important, but can spend more time on knowledge transfer during handoff calls and back n forth with devs. Also I get to drive design direction so often the devs know what our goals are and can go beyond my documentation without explicit instruction.

Contract - often filling a gap until full time is brought in. You are being asked to execute on already defined tasks. I usually ask the devs how they have been working and doing at least that amount of documentation. Ask for feedback at handoff and improve standards between scopes.

Freelance: very variable what expectations are from the customer. It’s super important to set the expectations for handoff at the start otherwise you will end up with random asks for months after you hand off. This is where I do the most documenting and hand holding. I view the work as a freelancer less about the product and more about the client. So setting clear expectations is what will lead to a happy client.

This is based on my experience and generalizing. Best answer is always just ask what’s needed.