Hey Gordlover!
I found the exposure work very difficult to plan also. I also work a full time job and could not find time in the day to set aside for it. But, what I did do is use the exposure work when the moment called for it rather than planning it. For instance, if I found myself at the store standing in line (big anxiety trigger for me) I would use that moment as exposure work. I would normally find someplace to escape to if my husband was with me and could stand in line without me there, or would busy myself with reading the magazines on the shelfs or something like that. So, in using the moment for exposure, I would make myself stay in line and not distract myself with things around the register area and I would allow the fear to happen and just go with it. It wasn't planned, but I knew it was a trigger so it was something that needed to be worked on. It worked very well for me. I'm still working on it, but have noticed huge differences in the situations that were always triggers before. So, even though you can't always plan the panic attack around the exposure work, just use what the program teaches for exposure work when you are in a situation that triggers your panic. Or, just when you're having a panic attack period. I get panic attacks sometimes at work for no apparent reason so rather than running to the bathroom or something, I make myself stay in the situation until the panic lessens and eventually disappears. It is getting easier.
Use the tools and the advice taught from the program the best way you can. It doesn't have to be done exactly the way it would be in a perfect world. I find that any exposure work, whether planned or not, still works fabulously. It takes time but you are worth the time it takes! It will work if you keep at it.