For the past 3 days I had 6 or less hrs of sleep due to my crohns disease. Now I am extremely scared and anxious about sleep. Any ways to reduce anxiety?

Anxiety. Talking therapy ranks really high. Cognitive Behavioral therapy or psychotherapy can be effective. Aim for daily exercise, 8 hours of sleep per night & good nutrition w 5 servings of veggies & 4 of fruit per day. Try tai chi, yoga, Qi Gong, progressive muscle relaxation, deep breathing exercises & meditation. Don't isolate - spend time w friends & stay active.
Relaxation training. Are your symptoms under better control? Are you n pain? Are you on medication such as steroids that can cause sleep disturbance ? Once this has been discussed with your doctor, reset your sleep clock with good sleep hygiene and try relaxation training which can help you shift your focus from fearful, anxiety ridden thoughts to a safer place along with releasing muscle tension to allow sleep.