Still Can't Astral Project

Heyy everyone :)

I've been trying to astral project on and off for the past 2 years and quite frankly havn't got anywhere.. Not to say i havn't gotten close..
I've read and studdied so much about it, tried different techniques and on occasion i would try every night for at least a month.. I would try during the day but have no time as i still go to school (yr 12) and have alot of things to deal with so the only time i get to try is before bed..
Now i know the key is relaxation but i've honestly been to the point that i'm so relaxed i start to feel uncomfortable..

I'll lie down for at least an hour and not move one bit, my hands are the first to begin going numb, then usually my feet, after a wile i feel the numbness reach my arms and legs but by this time i start drifting in and out of sleep.. And if i dont go to sleep i end up just feeling very relaxed with my mind awake but thats it.. If this keeps up for too long my body has a wierd feeling of uncomfortablness, where i'm just itching to change position.. Either that or randomly i'll get a tiny little itch on my body, anywhere and it just stays there and it always happens without fail and i don't know why.. It makes me lose concentration and wakes me up all the time..

The only feeling which i think comes close is a feather feeling, i feel like im floating down through the air in a feather like fassion..

If anyone could let me know if im getting close or give me some ideas on what i should do to improve or different techniques i'll be glad to read them :)

Thank you very much :)