Itsmyturn, I think that you and maybe some others on here are being a bit hasty and that you're panicking my love.
Forgive me if I'm wrong, but I take it you're a mum? And, if so, remember when it was all so new and so confusing, with conflicting advice and you were knackered, overwhelmed and unsure?
So it is with dogs and pups. It takes time. We contented owners were all novice dog owners once.
Tell us more about your pup.... what breed? Where did you get him from (breeder? rescue? friend?)?
And about you and your family... lets see if we can give you support and tips.
It DOES get easier... he won't ALWAYS need constant toileting and supervision, just as a baby won't. Once he's had his vaccinations you can take him out and wear him out (admittedly only short walks for growing bones), fitting him in with your schedule.
And when he's had his vaccs, training classes will be a great boon. He'll not only learn how to behave, to sit, stay, not to run off or bark and pull at other dogs but how to be socilaised and to cope with all manner of things and creatures he'll meet and YOU will meet a good support network. Worth asking your vet or local rescue for recommendations now. Likewise if you know of a good rescue locally get in touch with them and see if you can find other people in your position or who have been there and join the forums of DogPages and BigGSD (it's a German Shepherd forum full of rescuers and committed owners but their chat section welcomes all dog owners). My own local rescue, for whom I'm a volunteer, also has a very friendly and welcoming forum with members from across the UK and beyond and we'd be happy to support and advise you. You'll find us HERE - please do join us, we will do all we can and have some very knowledgable members as well as having the committed and caring rescue owners, who have helped a few MNers, on board.
It DOES get easier, honest.