You are better off giving vegetables rather than fruits. Fruits should only be given sparingly and perhaps once a week as they are high in sugar content.
The key to a healthy diet for budgies is much the same as it is for humans and other animals. You are best to serve foods in moderation.
Vegetables can be fed daily.
You can make a "chop" every other day if that works for you.
You can give your budgies half one day and refrigerate the second half for the next day.
What you want to do is chop a variety of things, kale, romaine lettuce, and shred carrots to add that to the mix,
Sometimes you may want to add peas and corn and sometimes mix in some cooked quinoa.
Whatever your budgies do not eat after a few hours should be thrown out.
Remember -- Too much fruit is not good anyway because of the high sugar content.
I would recommend you only feed spinach once or twice a week.
Spinach and Parsley contain oxalic acid which binds to calcium, blocks the absorption of calcium and puts stress on the kidneys.
Too much oxalic acid can also cause poor blood clotting and convulsions in birds.
Cucumbers are mostly water and may result in loose droppings if you give them too much.
Other green leafy vegetables you can offer include:
Kale
chard
collard greens
fresh beet greens
fresh mustard greens
fresh turnip greens
endive
Romaine
watercress
fresh sprouts
chickweed and dandelion leaves (ensure they have not been chemically treated)
