Thats exactly me, I've trained my body to go in the morning and after lunch but not in the evening. I tried changing that to morning and evening and ended up messing it up for the next day by going 3 times in the morning due to a build up.
Medical Issue: Rectal Bleeding
Current Diagnosis: Colitis and 2x 1st Degree Internal Hemmeroids
Medication Prescribed: 800mg Mesalazine (Asacol) x 3 per day