Thanks for your query.
Most effective way to manage diaper rash
is avoid diaper as much as possible.
Air out the skin.keep it dry and clean.diapers should be changed frequently.
Continue with medication as advised.
Regarding passing motions more frequently,it is common in breast fed babie to pass 10 to 12 motion a day due to increase gastrocolic reflex.
Wishing your baby good health.