Hi jw15,
I think you are doing the right thing and taking the time to reset. I took an 11 month "Disruption of studies" which sounds similar to your LoA. Though I used my time to work on an external research project but I think the break helped me with my PhD. As coming back after a break let me reset my emotions towards my work. I had gruelled during a lot of my PhD and that emotion had slipped into my impression of my PhD, I could only see flaws and not achievements. I don't know if you will be similar, but for me the painful emotions faded far faster than the actual work.
So my advice is, don't think too much about your PhD. Find something that isn't too stressful to keep yourself occupied and reset emotionally. In 3-4 months when you might be in a better a place you can re-approach your PhD with a clearer mind.
Quote From jw5:
my career path planning (one of my mistakes is I didn’t have a clear expectation of a PhD). Have no idea about what’s next
Does anyone have a plan for after their PhD?