I don't go by the weight ratio thing.. I've had the best luck feeding small meals more frequently. I believe if they eat something smaller, they digest it faster, utilize more of it, which is apparent in the smaller poops, and grow faster.

For instance.. I have a pair of holdbacks that hatched last spring. The female is 1400 grams and slender. The male is 900 grams. They were fed meals that usually never put a visible feed lump in their bodies, and every 4-5 days. The female eats weaned rat sized food, including the occasional adult ASF, every 5-6 days still. That's a pretty small meal for her size but it's worked to get her up to size without making her look fat.

I did the same thing with this years babies and they are all between 300-400 grams at almost 5 months old. Not too bulky looking either.

I decided to start feeding my females and breeder females this way after talking to other breeders who had great luck with it. I also have a 9 year old female who has never been a consistent feeder. I use to give her medium rats and sometimes larger if she hadn't eaten in a few weeks. As soon I started giving her small meals she started eating more frequently for me and would gain back her weight after laying eggs faster than in years prior.