1. Buy a 128GB M2 ( if you have a spare slot ) or a sata
I saw one on NewEgg for $10 .....I mean even if you don't use it again it's no biggie.
2. Buy another 8GB thumb drive so as not to overwrite 23H2 thumb drive
3. Download media tool and do thumb drive with 24H2.
4. Disconnect power lead or disable in Bios your 23H2 drive.
5. Run W11 thumb drive
6. Install W11 24H2 on 128GB SSD ...more then enough room.
Test Test Test
Now you can test 24H2 and continue to use your 23H2 when you need.
I would recommend just disable which ever you not using.
If you decide 24H2 is okay you could just keep it as Primary drive
Or if you have a faster Sata then use that, backing everything up properly before you begin of course.
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For me that is better way then wiping your 23H2 and installing 24H2.
For sure first day you will find things you don't like and most likely will swap back again to 23H2.
This way gives you proper time to explore 24H2 and seek fixes for any issues you have with it.