Learning new words in one session or two sessions?

I noticed that learning new words are now in two stages. Only after choosing to “learn new words” twice will they show as fully bloomed. So my questions is this – is it more effective for learning the words to fully bloom them in one session? Or should I come back at a later time that day to finish blooming them, for better long-term retention? Does anyone know what the intention of the Memrise staff was when they arranged it like this? Or how do you approach it yourself?

Not entirely sure by the context, but the normal way to go seems just fine (learning them till the normal point / pace they bloomed and practice them when practice comes back up unless need some extra practice with pronunciation or spelling). Some like to practice more to get it drilled a tad more though.