Aiden is 2 months and he insists on standing up. He has been doing this since about 1 month and is…

Aiden is 2 months and he insists on standing up. He has been doing this since about 1 month and is getting really strong. He can hold his own weight while I hold his hands. I've heard their cartilage is still strengthening and it may not be the best thing. He gets stiff and cries when I don't let him and he's very happy, smiley and chatty when I let him stand up. Sometimes he will lift his legs and take steps with my help. He can't balance of course. Any thoughts?