Flashcards – All-in-One sets or different sets ?

Hello all,

As the title suggests, I am now starting to expand my immersion in diverse Japanese media (video game, Satori, Hiragana Times etc…) and this is the first time doing so after having achieved classes with Marugoto.

I used to write the vocab from these lessons and the Marugoto in one notebook but now I want to start creating flashcards. I was wondering whether I should just feed one unique flashcards with all the words I would come accross or should I rather create different flashcards depending on the source material ?

My concern is making sure that I do not just forget to check back some previously read vocabulary and I am hesitating creating multiple flashcards for that reason.

What would you suggest ?

Thanks a lot !