I say go get him too! At 7 weeks he should be able to eat on his own and use the litterbox.

My two little ones I'm fostering are about 5-6 weeks old. They're eating canned and crunchies along with mama's milk. But they can certainly start to be weaned. Ideally, most shelters like to keep kids with mama together for 8 weeks.

Go get 'em!!!!