The phrase "enough diapers" means having an adequate or sufficient amount of diapers, usually referring to baby diapers for a certain period of time. Full definition
I think I will have enough room for enough diapers for both kids. (simplymombailey.com)
Pack enough diapers / Pull - ups and wipes for the first three days of your trip. (thespruce.com)
Instead of buying enough diapers in each size range to diaper your baby, you buy one stash of diapers that you will use from birth to potty. (diaperjunction.com)