Hi
Yes, humira is one of the most powerful medications used to treat crohns disease and can bring on and maintain full remission in many people.
It can take a while for it to work as it has to build up in your body, but the fact that it is reducing symptoms is a good sign that it is already having some impact on the inflammation in your digestive tract.
The amount of time taken to achieve remission will depend upon a number of things including the dose of medication you are on and how severe your condition was when you started treatment.
How are your bloods looking?