The top-down approach is the trending therapy recommendation used by many gasteroenteroligists. Start with the stronger meds much, much earlier within the treatment process to extinguish and control UC before it spreads in extent and severity. That produces the best quality of life, controls it fast, and lets you move on while in a remission and forget about
a UC. You could try small adjustments for the next 6-months and not be much, if any, further along in getting past this flare.
5 bms a day puts you at the high-end of a moderate flare, and the low-end of a severe flare. Humira is a perfectly reasonable recommendation with those symptoms. If you're feeling pretty good at 5-bms a day, then you're really forgetting what 1-bm a day is like, and how a remission would be a whole lot better quality of life through stronger treatments. Saying "well 5 bms a day is at least better than 7" is a trap, it's not the best you can do, you can do a whole lot better.
What good is saving a trump-card up your sleeve, if it is only a joker? You're best to try all of your treatment options and get into a remission. There's many biologics available, and many new treatments in development. You are not at the end of your rope, if you try Humira now