I agree with @Isadora , don't be in any rush, enjoy them while they are just hanging out and learning. They are still young and with out any older guineas for them to watch and learn from their bravery will come slow. My first 10 keets 4 years ago had to learn on their own and I was impatient for them to do all the the things you want yours to do. Well, they got brave and now I have one
View attachment 2663741 left from the original 10 , and he's probably as smart as a guinea can get, he knows his way around. Patience is the key.