Gonna do my best to keep it brief but tldr: anyone else get better only to get worse again?

I was finally diagnosed last October, although I'd suspected I had BPD for a long time. Therapist told me I should see a psychiatrist, psychiatrist tells me I have BPD, bipolar, and C-PTSD. Took it really hard and stared cutting and considering suicide again. 

But I go to the group, and I do EMDR. I start genuinely feeling better. I find the skills kind of annoying, but helpful. 

Everything's going good until about two months ago. I have a hypomanic episode- overspending, never sleeping, super promiscuous (thanks tinder). Long story short, friends I've had for ten years finally decide they're sick of my behavior and cut me out. 

I get back together with an old boyfriend. I'm working at this cafe/bakery as a breakfast cook and early morning baker. I love the job- everyone is nice and the work is satisfying, pay is good, but the hours are seriously fucking with me. I start taking uppers again to cope with waking up between 2 &amp; 4 in the morning. My social life is pretty much shot. 

At first when I realized I was manic, I figured I should go see the psychiatrist and have him up my dose of antipsychotic. Then my manic ass somehow convinces myself they aren't working at all, so I stop taking them for a month. Obviously, mood swings increase. 

Boyfriend is moving seven hours away. He's received an amazing job offer, but I'm kind of freaking out. He's the person I spend the most time with. I'm also worried about staying faithful in a long-distance relationship. 

Experiencing a lot of depersonalization, probably as a result of my schedule (a day to me now is way different than other people's days. Up at 3, work 4-noon, then a nap maybe, bedtime at 8). Trying to do mindfulness but I just.... can't. It seems stupid. It makes me feel worse and more aware of how much I've slipped up. It makes me question whether I haven't actually gotten better, but just learned how to more effectively compartmentalize emotions.

I go back to college in a month. Just transferred to a four-year university, got into the honors program and everything, but I'm not excited. Registered too late and couldn't get all the classes I need. Also worried about managing my work schedule with classes, and the fact that my symptoms have re-emerged pretty much full force. 

I know that this is pretty common; that recovery is not a one-way street and that everyone has ups and downs. I'm just really frustrated now. I feel like I've managed to unravel months of progress in a short amount of time, and that I'll never really get better. 