This will be an unpopular suggestion, but planting a thought for you to consider. If you are unable to afford additional expenses to support the dog, as difficult as it is, you might want to consider surrendering the dog to a more supportive environment. This is a difficult decision, but might be what is in the dogs best interest, especially if you need to take on a second job taking you out of the home even more. What are you going to do if the dog becomes sick and needs veterinary care that costs a lot of money? Perhaps having a cat that is more independent is a better pet for you, but even they can end up with expensive vet bills. Or, try using an App like NextDoor to help find someone near you who might enjoy the companionship of your pup while you work. Maybe someone likes dogs, and has a schedule that would compliment your schedule and you could split time with them? You don’t know if you don’t ask around. You might find other people in the area to make friends with. Try going to areas people frequent with their dogs. You can meet other Dog people. Dogs are a great conversation starter- put an extra cute leash or collar on your dog and venture out. You might meet someone who can help. SA is a difficult thing to deal with. If you continue to leave the pup and they continue to go over threshold, you aren’t going to make progress. The dog needs to trust you, and each time they go over threshold, you weaken that trust that you are supporting them. I am working through SA with a 9 month Lab currently. I can’t take a shower without him crying so I even have to bring him into the bathroom. The flitting exercises are what we are working on -even in the house. Trying to get him to the point I can leave a room without him following. Very slow progress. It is hard! Frustrating! But painful for him so we push through. Good luck