The CA 568 is available with the 1040, DONT use the 1065.

Go to Update > Select and Download New Products and you'll see the CA LLC in the list right below CA. Download/install it, then from the 1040, when you switch to the state, you'll see both CA 540 and CA 568 to select.

You wont be able to Efile an amended CA return, 2019 just didnt give us that ability.