By the way just saw this interview:
https://fs-gossips.com/daniil-gleikhengauz-eteri-georgievna-is-our-nutritionist/
Choice quote:
Daniil Gleikhengauz: The coach’s wish to change this weight. But if, for example, you have a weight of 47 kg, and you are told that with your height your weight should be 46 and a half for six months, then no one says that tomorrow you need to come with a weight of 46,5kg.
They tell you: here you go, seven days – it’s not a big problem to lose weight a hundred grams per day. Without the need for any prohibited methods.
Probably a lot of training centres are like this, but it's always interesting how open Sambo 70 are about these things. I always wonder how setting strict weigh limits on 13, 14,15, 16 year olds actually works given how much kids grow and develop at those ages simply due to nature.