My DS is 18 weeks old and I have started weaning him. He has been on baby rice now for 10 days, which he absolutely loves. He is always gnawing on his wee fingers and tries to chew anyone or anything he comes in contact with. I was thinking of giving him a rusk to try but I'm not sure if it's too soon. I'd appreciate any advice. P.S He's a big boy, 19lbs.