First, you did brilliantly on those tops, the chevron and Pleione. The look very flattering but intentional and super stylish. So, you know what works.
Sending super-empathy encouragement. Winter ended for me with some kind of bit of extra something that changed fit just enough to make me uncomfortable but also discouraged. For me, just a few # can make virtually a size difference, yet next size doesn't fit well elsewhere. And also I become extremely self-conscious about tucking in. So there's a big tendency to say, What's it all for, my wardrobe is jacked up. Or, I'm dressing to hide, now. And a vicious cycle can start. Not to mention not knowing whether items should be saved, for after getting back on track, or will be guilt-inducers.
You seem to be making an excellent start by creating outfits that work for you right now. Honestly, you're way too hard on yourself because you have an inherent elegance and beauty that's way ahead already, and no one is really noticing flaws the way you are. Really. Just use your own good sense about cut and fit right now.
The model I'd go for is the old saw, fewer, better. You have a large wardrobe but not all of it works for you right now. Wear only those outfits that make you feel great. Use your footwear and accessories for variety. Add a few pieces, as you are doing, for variety but don't overextend your time & energy there.
My biggest pitfall is to be tempted to spend more time finding new items to compensate than I spend excercising. That tendency becomes less if I focus on just my best-fitting items, which boosts spirits and motivation, and realize I really do have more variety than I need even when putting aside some of the meh items. I keep reminding myself, what is the recipe for life.
Oh, 'scuse me, I need to go take a walk......