jrgd

Checking the /boot size on my Fedora install, I partitioned out a gibibyte for the 3 kernel plus recovery kernel setup, which takes up about 338 MiB in total. Depending on out-of-tree kernel modules and bootloader modifications installed, your initramfs images could be larger. A few things to look for:

• the size of your current initramfs and vmlinuz image(s)
• any kernel modules you needed to install alongside your system (v4l2-loopback, nvidia, realtek, etc.)
• If there are other large files present in the boot partition

If everything there looks fine and/or is necessary, you might need to expand your /boot partition (either reinstall if new system or offline partition shrinking, moving after a data backup if you have personal files you care about).