Hi & welcome to the site! I don't have any advice to offer since I've been unsuccessful at my own attempt at quitting, but I can tell you that you will get more advice and encouragement from the people here than you ever could have imagined. Good luck and keep posting!
P.S. I found that warm baths really do help! And I had some success using a melatonin supplement to help with the insomnia, though I don't think anything will completely take it away until you're through the withdrawal period.