thats alot of Nyquil... I would check there site and see how much you can safely take... eating salty foods help keep you warm so grab some chips...
nyquil has alcohol in it and alcohol works on the same reseptors in the brain as opiates do, it maybe helping your withdraw because the nyquil is just taking the place of the opaites. any alcohol druing opaite detox is not usally recomened even in the small dose thats in nyquil. hope you feel better
day one i came home from the school at 5 o clock and fell asleep til 1am coulndt fall back asleep... eventually i decided to eat some milk and cookies since milk helps me fall asleep by then i went to my bed with a dry mouth but was to lazy to get some water. its was late at night and freezing so what helped me was waving the blow dryer under my blankets a lil bit to warm me up and fell right asleep good luck