^immodium will really help with the diarehha! i have never been through benzo WD, but i am currently in opiate withdrawal and i know how it feels to be in withdrawal! benzo withdrawal is certainly more intense, and i think your doctor is naive or just plain stupid. 40mg(im having trouble understanding which dose you are at?? 90mg? 5mg??) to nothing in 2 weeks is wayyyy tooo fast!!! he should have moved you down 5mg every 2 weeks, then at around 10-15mg, move you down 2.5 every two weeks, then once you are at 2.5mg you can either jump off, or take 2.5mg every OTHER day for 2-3weeks then jump off...
nothing will totally help you withdrawal symptoms like a GABAergic other than pregablin or gabapentin. these two medications are essential for coming off opiates or benzos. they almost completely remove all withdrawal symptoms, physical and psychologically, quite effectively! other than that, you will just have to deal with the symptoms such as utilizing a sedating anti-histamine (trazadone, diphenhydramine, hydroxyzine, ect..) for sleep. in addition, marijuana could help with aboth physical and mental aspects depending on how you react to marijuana. another great tool you could use is baclofen or phenibut. these are both GABA-B agonists, and should help by relaxing muscles, providing sedation/anxiolysis, ect..
definitely stay away from alcohol though as it will exacerbate WD symptoms on the comedown! good luck, withdrawals in general blow; but benzo WD is no joke! Wd from a hefty benzo habit is probably the worst of the worst! if you get through this though, you will be a much stronger individual, and you will be able to accomplish anything! most people say withdrawaling from moderate-large opiate, benzo or alcohol abuse is one of the hardest tasks to successfully accomplish without relapsing. i say progress is progress; even if you relapse, you shouldnt get discouraged. you can do this, self-confidence and moral support is important for the next few months as sobriety is not easy. however, i think the greatest advantage you can give yourself would be to view this as positive as possible. try to look for the silver-lining here; doing so is difficult especially with anxiety/depression but have faith! having an optimistic outlook goes a lonnggg way; positivity seems cheasy, but it isnt and really works, at least for me.
good luck
-laC