You may need to look out for pet sitters or pet boarding. Pet sitting concept is common in western countries however its very new to India.
I could have helped you if you were in Gurgaon, I know of pet sitters here.
Leaving your dog alone for long hours can be stressful for him, the dog can land up in depression, it is many times suggested to raise two puppies together than keeping just one. 2 puppies can be company to each other