My son was dx'ed at 15 his CD was severe and he went straight to remicade. It was awesome he went to feverish, fatigued struggling with pain to after the first dose feeling like he was a normal teen. We had to up the dose, shorten the schedule and add mtx. The remicade was a miracle drug for us but one area of his disease was so severe the remicade just couldn't tackle it. So we ended up having a resection. He handled surgery fabulous and was back to his part time job and school within a week or so.
Each infusion is done in a GIs IV lab, a hospital IV lab or a stand alone infusion center. His GI had an on site IV lab so that is where he got his infusion. They are IV infusions and have the convenience of being able to do blood work and checkups at the same time. They can take some time especially in the beginning. But they can speed them up if he tolerates it well. The schedule after loading doses can be anywhere from 5-8 weeks and some times four if the GI feels it is warranted.
My son didn't really have any side effects and usually went back to school or activities after infusions.
My son had to stop infusions before surgery and when he started back he had developed antibodies which can happen if you stop the biologic for a length of time. So he had to switch to humira, another biologic bit it is a self injection. He is 18 now and just graduated. We just had a scope that looked great we are just waiting on the biopsies.
I'm sure many others will be by with their experiences. I hope your son finds remission quickly.