Good luck, I would advise not allowing him to sleep with you at this stage
as he will not sleep through, but will wake periodically to yowl. I know it
is hard, but shut him away from you, and don't even talk to him or open the
door when he yowls; this is teaching him that by yowling he gets what he
wants (your attention).Keep in mind that he doesn't need your attention he
just wants it. It is not too late to train him; if you train him to yowl
every time he wants something he will never stop. But if you train him that
things happen at a certain time, regardless of his yowling, eg you pat him
after you get up at 7am and not before, no matter how much he yowls, then he
will soon stop. Right now he thinks that the minute he yowls you come
running. This is not what you want him to think. You want him to think that
every morning, at 7am AND NOT BEFORE you get up and lavish attention on him
(or whatever time you choose). Most importantly do not respond to the yowls,
no matter how heartbreaking they may be. Tell yourself that he doesn't
'need' cuddles right now, he needs cuddles regularly, but he won't be
psychologically damaged or doubt you if you don't cuddle him the minute he
yowls. Instead he will learn that behaving anti socially is fine and you
will put up with it. Cats like routine, and the sooner you make him aware of
your routine, he will feel a lot more secure, knowing that at x am you will
get up and feed/pat him. This will decrease his anxiety and also the
yowling.  Sorry if this is over-long and convoluted but I hoep it helps.
Good luck

Vinnie Im not sure just why a male or any cat would do this
but the thing is, how can you say "I would love to get a full nights
sleep"?

how can you say that?

it's just a cat...

don't tell me you are scared he won't like you if you correct him

call it what you want

sure, mine have woke me up plenty of times..

why? uh.. i left the door to my bedroom open?

all you have to do, listen.. shut your door
when the yowling starts up, chunk a can good at the bedroom door

let him know you don't like it

these low thudding sounds won't scare him so bad that it injures him

I guarantee you it will work on the second or third can..
and thereafter, on the second can
and thereafter on the first can

and soon.. maybe once a week.. and soon.. no more.

they are dumb little creatures compared to us. they don't understand
our needs
he means no harm, he doesn't know how important your sleep is

throw something at the door.. he will stop

keep on f.cking around with him, let him know you're a pussy about it
too

you pussy! lol

VINNIE IS A PUSSY

cat wants to go outside
HE CAN'T GO OUTSIDE

not now not ever

i suppose you wants to "ask" the cat, what he wants, ha

he will say, "I wanna go outside dad, please!"

you have to overwrite his programming, it's not a pretty thing
but neither is yowling in the middle of the night

i figure dude didn't come here to play tiddly winks, he wanted
solutions
something that would work

you have to see him his yowling and raise him something, it's got to be
bigger than the yowling

for example, I am engrossed in solitude just now.. no cats.. i love
them real good, they love me.. but.. if i let them, they would be all
over my bed, on the mantle, under the bed, on the keyboard, sampling my
snacks etc... that's their jobs

you've heard of collectors, people who take in alot of cats
we have a few of them here in this news group

they keep taking cats on, or some of the cats have litters and they
just keep spreading like wildfire... totally irresponsible, but I don't
condemn the collectors.. it's another subject someone should bring up

every single collector story i've ever heard ends in one of two ways
(so far I've never seen an exception)

one, the collector abandons the hive
or
local authorities come in and remove the cats

how many stories have we heard where neighbors report a smell, the
authorities show up and find, cats in the walls, cats crapping on
everything, no food.. dead cats.. etc..
we all know a cat will eat a cat, a cat will eat its owner
the collector will eventually abandon for mental preservation

this is the same thing that is going on with the original poster, he is
being depraved of sleep (thats what happens with collectors.. it's one
of the reasons they abandon)

soo. without sleep.. the OP's job and family is going to be affected..
(eventually)

a human should run the home and decide the rules, not the cat
the op has a real challenge in removing this leapords spots

if he pussyfoots around with this.. it's going to frustrate the cat
if he stalks the cat and pretends he is going to "do something" to the
cat... he is sending a very clear message, one that the yowler will get
on the first or second lesson.

alot like two alley cats fighting. one will reach out and scream bloody
murder and at the same time slice off some of it's opponents ear.. a
very clear message

it's just my view