8 1/2 month old stubborn baby sleep issue?

ok im gonna try to make this as short as possible..ive ask this same question over and over...its been going on for months now. i have an 8 month 2 week old son. takes morning and afternoon nap..we have done bed time routine from get go feed bath snack bed at 8 pm he bfs all day as he wants at least 4 times or more. eats 3 solid meals a day and a snack before bed .. rice cereal and banana etc put him down sleepy but awake every time he takes nap or bed. at bed time..he wakes up 3 hours after bed and 2 hours everytime after that demanding to nurse..tried to sooth him every way possible just makes him more upset..tried to have dad go to him he get more angry..ive let him cio in the past..didnt seem to work he would throw fit 40 minutes plus..sounded pitiful! try to just pat him leave room..crying last even longer..so if i nurse him seems to get done faster and we get a lil more sleep got to where ill just drag him to bed with me and he will be latched on to me the whole time then begin kicking being annoying to where i just have to put him bck in bed and we do the whole same thing over..and over...if i do sleep im so tired im scared im gonna smash him...if i leave him crying in bed i feel we never get sleep including him since he spends so much time screaming and i wait it out to go cover him and sometimes end up waking himright back up....im confused desperate, lost and do not know what to do. I know he will only be a baby once and believe me I HATE HEARING MY BABY CRY and not going to him but am i ruining him for future wake ups what happens in a couple months when he begins to ween off me will he still wanna nurse all night..i dont want to do it all night anymore 4x a night is not normal...can anyone give me suggestions? dr says to let him cry some try to sooth him and if all else fails nurse him..but i think thats just grasping his habit and making him know im gonna nurse him if he keeps crying for 40 minutes plus...we all need more sleep p..he wont take binky or bottle etc..should i just shut the door and wait it out for as long as it takes until he realises he has to sooth himself one way or another>?????? this has gotten ridiculous i know he is not hungry 4-5x a night like i said he eats well all day! he is using me as a pacifier. although he does drink some during each waking.. no ear problems and gets all my attention all day long...He has me wrapped around his finger:) but i feel im just promoting future bad sleeping patterns..and scared ill never ween him especially if he demands it all night long this should have stopped months ago and i know im to blame by soothing him this way but i thought he might be hungry..or a growht spurt..but im pretty sure bf babies start going more tehn 2-3 hours at night without nursing by 6 months.even if not he eats plenty of meat veg and fruit..even breast milk during day. im repeating my self sorry just seem to get the same answers every time i ask that i dont feed him enough or breast milk is digested faster i know all this anddont think its the issue......if you have any crazy suggestions other that offer bottle at night let me know caus eit didnt work ive pretty much tried every single thing other then stick with letting him scream himself to sleep is that the only answer????