Doable! My husband and I have a 5 month old GSD named Chief
. My husband and I both work full time jobs. I work 8am-5pm and my husband 7am-3pm. I come home during lunch to feed and take Chief to use the bathroom and when my husband gets off work he will play fetch with Chief and I walk him or take him to the dog park in the evenings. He seemed like at first it wasn't enough exercise but I think that was just normal puppy behavior because he's now finally calming down and chilling out!