I'm sorry you've had a rough time @ilovecherries. Finding out your treasures don't fit must have been quite some icing on that particular shit cake.
If your weight has dropped low then i would definitely wait and see, but if it's dropped to a healthy number that you might consider maintaining even if ill gotten, then i would do something now that's more proactive and positive.
I came across some notion of the quote above when kondo was more prominent and i found it really freeing. For you, having something you could love but can't wear, so close but out of reach, might turn out to be just another layer on that cake. Personally, if ebay isn't working for you, I'd search out the alterations person. My nearest reliable and safe person is a 1.5 hr journey from me. But in your shoes I would make an afternoon of it - take the stuff to them, see what they say, decide if it's worth it, get some nice lunch. You can still opt to keep them stored or to let them sit on ebay.
When i first bought toast things i purchased my high street size in trousers. They were comicly big, but i had lept from skinnies to these so i figured it would take me some getting used to. Then the pandemic hit and I stopped wearing smart trousers and also gained weight and surpassed them, but i refused to buy a bigger size so stuck with the more forgiving dresses. Once i was able to get back into those trousers I realised i just didn't really like them that much! I had built them up in my mind as some form of punishment. I was then able to let them go.