Icloud backup fails due to not enough space
I am unable to backup my phone (14 pro) to icloud. Last successful backup was 9 weeks ago. I deleted that backup (4.7 GB) and am currently using 3KB out of the 5GB available on icloud. I selected backup now and it failed saying not enough space. My contacts (322) are the only things I want to backup. It doesn't seem plausible that 322 contacts would produce a backup sized greater than 5GB. Is there something else being included in the backup that I have no control over? Thanks.
iPhone 14 Pro