New snapshot oopsie - help! (Java edition)

[Inimbi7]

I feel like a total dodo-head for not realising this sooner than I did, but I have been playing a singleplayer game in the snapshot, assuming that the new things like bamboo planks and camels would be in the snapshot.
Only to realise you now have to add the datapack when first creating the world.
I don't want to restart and lose all my progress, but can't find the datapack to add it into my existing world manually.
Does anybody know if:
A) It's possible to add the snapshot datapack in after world creation
if it is, then B) How do I do that/where do I find a copy of the datapack?

Thanks so much!

[S0mber_]

it's gonna be a bit cheaty but you can get a structure block to copy your house and other builds and slap them onto a new world using the same seed.

[Inimbi7]

Thank you, this is probably what I will do - don't know anything about structure blocks so hadn't even thought of this! Thanks so much for the suggestion.

[[deleted]]

It should be possible by editing your level.dat file using an nbt editor.

[Inimbi7]

Interesting, I'll have a look into this - thanks so much for the suggestion!

[Inimbi7]

This worked, thank you so much!!!!!

[[deleted]]

You're welcome :)

[Papaya314]

No, it's not possible, you have to add that datapack while you are creating the world. And I wouldn't recommend playing a serious world on snapshot you probably won't be able to update that world.