Home button stop working

You may have slightly torn the flex cable of the Home button when you did your repair. That damage may have been insufficient at first but over the week got to the point where Touch ID no longer works. You could try a new button but you will not have Touch ID functionality. Only the original Home button, which is paired to the logic board, can offer Touch ID. If you can bring your phone to an Apple Store or other authorised repair center, they can replace the button and re-pair it.

Open up your phone and closely inspect the flex cable on the Home button. Depending on where it is damaged, it may be repairable but very few people offer Home Button flex repairs. Attach an image of the damage so that we can give you more guidance.