Help making a dataloaders with prepared fastcore L

Hey, i am trying to recreate the same language model from book number 10 from the course but with a series of tweets of mine. I prepared a fastcore L already with the data, it is already tokenized and numericalized, but i don’t know how to continue, if you guys can help me. This is what i got:

and i am trying to replicate this:

But i don’t know how to make the datablock with my own prepared data