The Baby Manu were thrashed 80-23 by New Zealand on Tuesday, having been outclassed 43-20 by hosts Australia on the Gold Coast last weekend.
Samoa coach Junior Leota said they have worked hard in training but need to replicate that effort come game-time.
"The coaching staff and management have done all we can do off the field to prepare these boys well but obviously if these boys don't do their homework on the position and don't front up mentally that's the sort of result we're going to get (like the first two games)."
