Yes there are different views on the feeding subject! If your tortoises are gaining weight and eating well then that's a good sign.
I normally feed one large meal a day and only feed more if I think the tortoise really needs to be built up. I think your feeding approach sounds about right.
Sometimes tortoises gain weight in bursts and this might be quite natural. So don't stress too much over some weight gained over a couple of months as they might go a month or two without gaining another time.
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Testudo Hermanni Hermanni (Corse) tortoises
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