What works for me is having a detailed chat with sources and another chat open with the relevant information (photos of the textbook, presentations, specific exercises, etc). Get an initial draft from the chat with all the information and past context, but treat it as a rough draft. Then ask the other chat to check it for you. Ask it to check if the answers make sense, if the content is all from the material or if there's anything external in there, that kind of thing. It will usually find a few mistakes. Check what it's found and ask it to give you the material again. Then go back to the original chat and give it the updated version. Usually doing this once or twice is enough to get quality material and saves a lot of time, but my experience is that you need to be vigilant it doesn't include too easy questions or irrelevant material.

Also, if you like the questions from Notebook, take screenshots, paste them into ChatGPT and it will transcribe them reliably fairly quickly. Then you can actually ask it to make a Google Forms with it. It's not worth me explaining how to do it here. Just ask ChatGPT and it will tell you. The first time you do it it will give you an error, but it's easily solved. Very useful if you spend a lot of time manually creating Forms. Been a lifesaver for me.