Hi Isolde,
I really feel for you. I started my masters degree like 4 years ago and I truly believe that the stress of school make my bipolar worse. I kept pushing and pushing until I broke. I had to quit school about a year ago, and it broke my heart to give up on this dream. If you decide to take a break, it’s ok. as you said, it might be something you can return to later. And if not, that’s ok too. You will find a new direction to follow. Sending hugs your way