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when fed food all of the food should be big as his head excluding neck.
monday - pellets
tuesday - pellets and krill
wednesday - half cube of frozen brine shrimp
thursday - small cricket if not big as head pellets to fill in
friday - dandelion greens, chopped carrots, romaine lettuce
saturday pellets
sunday pellets

If your turtle is still a baby/juvenile then that looks okay but you should try to offer the greens and veggies daily and maybe a little less on the shrimp/krill. As your res gets up around 4" you should cut back on the amount of proteins (pellets, shrimp, crix) to about 1/2 the amount that would fit in his head every day and increase the greens.