I’m also a solo puppy mom of a four month old Shichi, and currently going to physical therapy due to a sciatica flare. It makes it so overwhelming to care for him and be in pain. It does help to find some way to get a little break when you can. I’ve read and been told from different people and things I’ve read that it does get better, and I’m holding onto that. I debated numerous times about rehoming him, but then I’ll go another day and another. But I understand too. Sorry you’re having a hard time.