Mental health & waiting for sambo residence permit decision

My Swedish partner and I applied for the sambo permit about 6 months ago - I know there's likely still a long wait ahead before we hear back and I'm already struggling with the uncertainty not only about whether or not I'll get the permit but also with starting over in a new country. I worry about a lot of things, like finding a job, studying, building a network, and being held back by not being a citizen where I live, and not being from an EU country on top of it all.

While waiting, I've been trying to do what I can to understand the job market, save money, and learn Swedish. I am now at a C1 Swedish level, but it feels like I can't truly master the language without living there and the longer I have to wait, the more I feel stuck not only in progress with the language but just in general with what I can do to "catch up" when I move. Of course, it's also really hard being away from my partner even though we visit each other regularly.

I feel so anxious about this all the time and there are days where all the uncertainty and the prospect of a long wait ahead really get me down. I'm wondering if anyone has any advice on how to deal with the wait from a mental health perspective, ways to progress with the language while abroad or just practical things in general that I can do to prepare.

Thank you!