He's so cute! I got my lil guy at 8 weeks and he used a litter box right away, he caught on very fast and now uses it religiously for pee, poo not so much...can't wait till he's fixed! I started leafy greens at 12 weeks, small amounts building up to larger amounts. Now at 4 months he gets a full bunny salad every day and enjoys it so much! No soft poo or tummy problems.