If the bunny is only 9 weeks old you can give unlimited pellets (and unlimited hay, of course). I agree with BlueMoods though, that if she’s having some soft poos you might want to reduce veggies some and introduce them more slowly. I’m not positive (maybe someone more knowledgable will chime in), but I’ve heard that broccoli can sometimes make them gassy, so I’d be careful how much you feed of that.
Edit- I found the ingredients to the the food you’re feeding. I’ll post them for others to see since I’m not really knowledgable enough to give an opinion.
Grass, Oat Bran, Wheat, Soya Bean Hulls, Peas, Soya, Molasses, Yeast, Soya Oil, Mint, Ligno-Cellulose, Calcium Carbonate, Monocalcium Phosphate, Fructo-Oligosaccharides, 0.25%, Salt, Methionine, Vitamins and Minerals, Probiotic (Saccharomyces cerevisiae NCYC SC47 E1702 1 x 10^9 CFU/kg). Contains Natural Antioxidants. No artificial colours, flavours or preservatives.
I’m not sure which “grass” hay is in the food.