I'll fire back with the same fervor. You said he's seven years, but didn't specify weight. For all I know, he's 3000g or greater and is a bit fatter than his length allowed. Then, he should be on a 10 day. However, if he's not into or well over then I see no need for the 10 day.
In that case and based on information given, yes by what I do and the standards I hold you're not giving the best care possible. Should I fault you for that? The behavior and expectations I've seen in places, yes. You shouldn't be in this hobby and try to save a couple bucks. Do I fault you for it? No, I have different ways of doing things and would do differently than you.
The female you mention probably shouldn't be on a five day at a year old. By my ways, she would have been on roughly 17-20% for give days till about 500 grams, then the same percent every 7 after that.
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