You say you have a new apartment sized stove? Did you recently move and this came with the place, or did you downgrade stoves? I suppose a new pricey soup pot is less than a new stove, but if you’re going to have to replace a lot of things to fit the new stove, I would consider selling the stove and getting a stove that supports your cooking habits. Cooking from scratch is so important that I would consider that worth it. If it’s only the soup pot that won’t fit, then ignore this.
Exactly what I was thinking.
I've cooked on apartment size (24") stoves most of my adult life, until I moved into my current apartment which has a standard (30") stove. The difference is breathtaking. If you're big into cooking (I am too), and can possibly upgrade to a full size stove, you should consider that. Otherwise, if you're cooking on a 24" stovetop you are going to have to compromise on batch size. There's no such thing as an 8 quart pot that will fit on that stove. Even if you somehow found a narrow, tall pot that will fit, it won't cook the same way as the 8 quart pots you have now.
The answer, for you, is to find alternatives to using your stovetop. One hack I use frequently is to turn my oven into a slow cooker by setting it on low temperature of 200 or less - if that's possible with your stove. It also requires that your large pots be oven safe - are they? Otherwise, just get yourself a good quality electric slow cooker...although I much prefer the oven method as it heats more evenly, whereas slow cookers heat only on the bottom.
You could also buy a sufficiently large portable induction burner (if your pots are induction compatible) or regular electric burner. Check that you have an appropriate circuit in your kitchen to handle the load.
Finally here's a crazy idea: is there a griddle top accessory for your stove that covers at least 2, preferably all 4 burners? Assuming it gets hot enough you can then put your soup pot on that. Since soups are typically low temperature adventures once brought to simmer, this should work fine.