You shouldn't feel like that on day 8 well maybe ya with your dosage that's insanity that's 30-40 Vicodin a day Bobby lee style... Alright the main reason is you need food man I know it's hard to eat , try to get low grade cannabis even if u hate it smoke just a small amount so you have small appetite get something simple but healthy oatmeal, yogurt with honey and some nuts and literally take one spoonful eat it and take a 5 minute break eat another spoonful take it easy but slowly put the fuel into the body like gasoline it might not feel so important cause we've been used to opiates controlling that aspect but now you're recovering and food /sleep/water are gonna control you more than opiates in terms of how you feel. So if needed take Benadryl or a benzo to fall asleep it's vital you sleep although benzo isn't legit REM sleep it's forced sleep but that could help just feel better . Also buy high 8.0-9.0 PH water and sip it throughout the day all day every day dehydration is a big opiate problem I'm in the same spot but not even at day 1 :/ I'm jealous of you and happy and wanna be u so please do what u can to help yourself don't mess up day 8 is amazing congrats !!!!