Error Code: 1845. ALGORITHM=INSTANT is not supported for this operation. Try ALGORITHM=COPY/INPLACE
According to my research, this is a bug

https://bugs.mysql.com/bug.php?id=92194

which is explaining 
 " For ALTER TABLE, ALGORITHM=INSTANT was incorrectly rejected on tables
created in a MySQL version prior to 8.0.12 " 
" Fixed in 8.0.14. "

I didn't tested it with 8.0.14. I will post here the results once I tested it with 8.0.14.



[update]

Tested it in 8.0.14 and it works