How much of Royal Canin to feed my puppy? Guideline on the box seems much.

I have a 4 month old cavapoo, that weighs 3.2 kg (7 lbs). Her mother is a 6kg (13 lbs) cavalier, her father a 3kg (6.6lb) poodle. As per chatGPT her expected adult weight is between 5-6kg (11-13lbs), considering her age at 4 months being 7 lbs. I feed her Royal Canin Puppy mini, which per guidelines she should receive 110g of kibble daily. That seems a bit excessive as she currently receives 4x 20g daily, + some kibble as treats during training. Should I start giving her more food? I keep reading that a puppy should not gain weight too quickly, and in the last couple of days (8 days to be precise) she gained 320g.