I would stick to the higher end (5 oz per meal) this done 5 times in the day will end with 25 oz at the end of the day. However if you simply can’t stomach 5 oz at EVERY meal then at least make your main meals (Breakfast, Lunch and Dinner) to have 5 oz per meal and get say 2 oz in for your snacks…ending with a total of 19 oz.
Protein in this plan is key to staying full and dropping fat much faster! I hope this clarifies the question. If not let me know.