Lizzy, you sound a lot like me! I work a Mon-Fri desk job too and I'm also on Asacol 3x per day.
Here's my Mon-Fri meds & psyllium schedule, hopefully this will help you out a bit:
6:30 AM wake up, take some supplements & Nexium
8:30 AM arrive at work, drink supplement drink (Ensure or generic Slim Fast) and take Asacol (I do a supplement drink in the mornings instead of a typical breakfast as I cannot handle solid foods first thing in the morning! Even in remission, food that early in the morning makes me nauseous but I can handle a drink.)
10:30 AM drink psyllium
11 AM break, have a snack (no meds or supps at this time since it's so close to my psyllium)
1:30 PM lunch, take Asacol (most days I hit the gym for an hour and then eat lunch at my desk afterwards so really I'm usually eating lunch at 2:30 instead of 1:30)
5:30 PM get home from work, around 6 PM is dinner, take Asacol
10 PM bedtime, take Zantac, Amitriptyline & more supplements (I like to break it up so that I'm not taking a zillion supps all at once!)
Weekends or days off is when I get into trouble, I remember to take my Asacol but sometimes I forget about psyllium and supplements. I sleep in on weekends and stay up too late, I get caught up in projects or exercise or shopping or whatever and my whole schedule is just thrown out the window. I don't drink enough water on the weekends, sometimes I forget to eat and then I panic because I have to have food in my stomach to take Asacol, the weekends are just a mess for me! So if you figure out a good system for remembering to take Asacol and psyllium and supplements on unstructured weekend days, please let me know!