Presumably thats non starchy veg in addition to the protein shakes you are using? Otherwise far too unbalanced
During my vegetarian phases, Japanese, Indian, Pakistani and Sri Lankan cuisine have always been a good source of recipes using a wide range of veg
"Unbalanced" is not a big problem for s short term diet that lasts no more than 3 months, after all, a lot of us would benefit from not eating for 3 months provided we drunk enough water.