Hello and welcome - I'm sorry to hear that you are going through this, but glad that you found us.
The good news is that you *should* start to see improvement in your symptoms as your thyroid levels stabilize. Meds like carbimazole start working right away to block new thyroid hormone production, but your body still needs so rid itself of its extra stored hormone, which can take a few weeks.
Graves' can definitely put a strain on family relationships and friendships. Any chance your partner would be willing to read the “Open Letter to Husbands of Graves'” bulletin that you referenced? This video below is also very enlightening.https://www.youtube.com/watch?v=CB8_5rbCso8&t=1738s
It certainly seems unfair that your care during your partner's illness isn't being reciprocated. It's much easier said than done, but it's important to focus on YOU and regaining your health right now.
You might also consider joining the GDATF's group on Facebook, as that tends to get a lot more activity than this forum.
Wishing you all the best.