This is coming too late to be of any help for your last sleepless night, but maybe it will help in the future. First, know that you aren't alone in this battle. This is a forum of hundreds of other people who understand the struggle.
I'm speaking from experience that it does get better. There will always be good and bad days, but that's life and you're taking the right steps to make things right. Good job working with your doctor to try and find a better fit. It might seem like madness right now since you can't sleep and you have an interview today, but once you find the right balance of medication, it will be worth the effort and heartache to be able to live a more "average" life. The best thing you can do for your career is to find a medication mix that works for you and that you can tolerate so that you can be the best employee.
I too experienced the whole ultra-insomnia when I started my meds, but that subsided once I got used to them. I talked to the pharmacist and he suggested that if the dr. didn't advise otherwise, it would be ok to take mine in the morning so that it wouldn't be so hard to sleep.
Forgive the following ramble about things to help with sleep, but I am speaking from direct, recent, and constant experience on the whole topic. 24hours of each day of my life is spent attempting to stick to the medication and proper sleep schedules and tactics. I have an awesome Dr. that has all sort of suggestions to help.
Good work on the warm milk front - I have had lots of luck with this. Some people find chamomile or other, herbal, caffeine free teas help, but haven't worked for me.
Once you get over the initial insomnia bout, try to avoid exorbanant amounts of caffeine, especially after lunch. I think that caffeine is the devil (figuratively speaking). I've done some reading and there's significant research to suggest that large amounts do more harm than good when you're tired: the inital jolt gets you through the tough spot, but the end result is overall more fatigue to your system. I love drinking Pepsi in the evening after work, but I've managed to curb it to a small glass that I sip on the weekends for a treat, rather than downing a whole can which helps with the weight gain.
Another bad habit of mine is napping; I LOVE naps, but I've managed to curb the habit significantly since it totally throws your whole sleep system out of whack. The best is to have 20 minute power naps that recharge your system and help you keep going until you can actually go to bed at a good time.
Try to exercise about 4 hours before you go to bed, but not too late so that you don't get wound up before bed. Avoid stimulating activities like wild movies or stressful things right before bed. Give yourself and hour to wind down: read, meditate, or do some yoga. Yoga has actually worked really well for me. I have a few of the 20 minute, end-of-the-day type routines that are super easy, (about $10 on video/DVD) and work wonders since they get your whole body ready for rest and help to relax your mind.
My best trick is having a bath or shower right before you're ready to wind down. It almost always works for me. I've read that the shower warms you up, and then when your body cools off after, it acts as a signal that its time to go to sleep.
Keep your bedroom dark - awesome trick: Tin Foil over the windows. It blocks out all the light and its super cheap. Just lay it on the glass and tape in place. Doesn't take a lot of effort which is key when you haven't slept and you're strung out and tired and impatient and ... (you get the picture).
Have some white noise in the background - a fan or a radio turned down really, really low (so you can barely make out words) works well.
I'm also struggling with the weight thing, but seem to have managed to at least curb the gain with a good diet, lots of healthy snacks, and lots of activity. Still haven't lost anything significant, but the exercise does a world of good for my mental health and makes me feel better about my body in general.
I wish you the best of luck with your interview and hope that you are able to find something to help you sleep.