I have made a rod for my own back

[Shamoy]

Have completely fucked up with getting Dd into a decent sleep pattern and can't see a way to change it...
She is nearly 2 (22 months), she's never slept much. Doesn't seem to need much sleep, can stay awake for 12 hours straight and still be relentlessly cheerful.
She has never been put to bed awake. I nurse her to sleep and then put her in her cot. She doesn't get tired enough to nurse to sleep until usually 10pm ish, I then put her in bed asleep and she sleeps till about 6am, then I feed her again and she either wakes for the day or she dozes back off till 8amish. She naps in the day every few days or so (doesn't need to every day, even if we are out and about in the car she stays awake)

I'm utterly fed up of having no evening to do anything, I go to bed not long after her! It doesn't help that she is very active and into everything all day. Just unloading the dishwasher with her around is a mission!

She has been awake since 7.30 am this morning, its now 8.20pm and she is sitting next to me watching tv and chattering away like she's just woken up!

If I try and put her into her cot awake (when she is tired and has been fed), she screams blue murder the second she is put in there. She tries to fling herself out the cot amd without fail will scream so much she is projectile sick within minutes, then is usually sick again over me when I pick her up to clean up.

I fear I've missed the sleep training window. How can I sleep train a baby that can somersault head first out of the cot?
But she also can't speak really (the odd word) and doesn't understand enough to tell her for example 'you lie here and I will be back in 5 mins', she would have no clue.

What can I do? The only thing I can think of is to ride it out until she is old enough for a bed and to understand a bit more to talk to her and tell her about being put to bed.

Any other ideas to save my sanity? I just don't quite know how this happened... I have older children who all sleep normally and have done from less than a year!!!

Could you read some bedtime stories with her in the cot?
Then after two or three of them tell her it is sleepy time, get her to lie down and if she doesn't want you to leave get your own book or a magazine (but not a light emitting iPad or kindle) and read by the light from the hall, she'll be able to see you and be reassured but there shouldn't be enough light to re-activate her.

My 3 yo accepts this now, whereas I'd done all the things you'd done too, with exactly the same results. He sleeps better in his bed, or I start him off in bed with me and he gets so warm during stories, he drifts off.

She's learnt to cope with less sleep but it's not too late, my ds was a frequent waker til 3.5 years but now does 11-12 h without stirring and needs it. I agree with greenhill - as you have got to this point, stay in the room and ignore her.
When i battled my 2.5 yo dd (who was being a pain newly in a bed) she kept getting up and i kept putting her back supernanny style. Night 1 was over 40 returns to bed and took an hour and a half, night 2 took about an hour and night 3 less than ten returns. She is now 5 and doesn't dare to get out of bed for anything - bliss! I think she has remembered this training very well. You'll need to persevere though and have the emotional capacity for the battle - support would help.