Companion Care Needed For My Husband In Livermore

I'm looking for companion/respite care for my husband in his late 60s. He is recovering from pulmonary embolisms after being hospitalized and he is still weak in the legs and torso. While he can move around slowly with a walker, he needs "spotting" because his legs could give out on him. Occasional Assistance with showering and dressing is one of our requirements. We're looking for someone to provide companionship. If things work out, an overnight occasionally would be helpful (nothing set in stone) Must be a non-smoker and comfortable with an elderly, indoor cat. Patient is happy, positive, smart and enjoys sports.