Saving data file along my notebook on jovian, so i do not have to do it all the time

how i do save my file along with my notebook on jovian, so when i come next time i still have my file there.
i remember the teacher mentioned one time and did it himself but i could not remember what lecture it was and i can not watch all the lectures now

Open the project notebook in Jovian. Click ‘Files’. On the left click on ‘+ Add Environment File’ and load all the required CSV files.


Thanks you so much for help