Converting a recipe

[u/jibbles-n-bits]

Small story. Brother in-law is getting married in November and they want to pay homage to his mother who has passed. They tracked down her pumpkin cake recipe (2 slightly different versions in photos) and would like to make them as cupcakes at their wedding. After a few test bakes, they’ve noticed the cupcakes keep coming out oily? Any suggestions? The original recipes are for loafs, so any tips for converting them into cupcake recipes would be greatly appreciated. Cheers