I took your advice, Bettyblue--at least for an extra day. But I'm a little... cautious about using an ointment with an anaesthetic in it, so this morning I had what I can honestly say was the most cautious bowel movement in my life.
No horrible pain. There was some slight discomfort, but this was more of a slight wince than clawing at the air and uncontrollable shivering. The BM was soft and didn't irritate the fissure too much. So it's definitely healing! I'm sticking to as good a diet as possible, but I really am looking forwards to the quiet holiday of good eating, exercise and general chilling out I have planned. One more week to go of work lunches, but I've kept to the positive options and eaten food with fibre beforehand.
I'm still taking coloxyl, 2 tablets in the morning and 3 at night. I'm very aware that I can get dependent on them, so I'm going to take them for one more week and then see if my new diet is doing the job on its own. They're a godsend though, as is Soov It. The latter isn't exactly comfortable, but it helped.
Still haven't bought flax, but it's more of a time issue--tomorrow I'll be able to head to the supermarket.
Thanks again for your help, I'll keep this thread updated.