We need grass seeds that can be harvested/traded

What if you were on a vanilla skyblock, or one block challenge, or maybe a customized super flat that had grass blocks in a bonus chest and you somehow lose almost all of your grass/dirt blocks what would you do? You could use the knowledge you know from the game to get you more dirt blocks and replace/refill the area and wait minutes to hours for the grass blocks to spread depending on how big the area is. But lets be real do you wanna wait awhile for grass block to get to the other side? what if you lost all your grass blocks or had none to begin with? How would you even get a grass block? That’s where the new game mechanics come in if you have tall grass you can turn it into a grass seed by putting it into your crafting menu or maybe combing dirt or grass with a wheat seed to get the grass seed. Without the grass block:if you only have dirt you can wait for a wandering trader to spawn and give you the grass seeds or if you have a farming villager they can sell you the grass seeds (or just wandering trader. The seed: you take the seed and plant it on dirt and it takes 2-3 full Minecraft days to turn into grass blocks. As it is turning to grass blocks it has 3 stages 1st stage:a little bit of green in the middle because of the seed. 2nd stage:the seed or green spreads over the dirt block or just patches of green on the top part of the dirt block. 3rd stage: a lot more green on top layers maybe a bit on the sides? But yeah thank you for reading hopefully this makes sense.