Oh hun i am right there with you.

DD1 and food , i had fail safe meals but even those seem to be out the window at the moment.
If she was allowed to live on Feta, Fruit and Teddy Bears biscuits she would, she even has days where she wont touch nuggets or her favorite spaghetti.

The TTing all i can say is in her own time, DD1 started TTing in summer last year just after her 2nd b'day, of her own accord and she has only just now been fully TT'd.
I put a potty in the lounge, allow as much nappy off time as she wants and made a potty chart.
Outside of that it's all been at her discretion.

Going to bed, DD wont have day sleeps anymore and hasn't for months but there are nights she will be up til 9:30+ just relaxing watching TV with her dad and cracking it when we go to put her to bed, other nights you could say go to bed and she would just go in and put herself down.

I guess all we can do is remember "this too shall pass"but that doesn't mean it's not frustrating.. i get attitude already and she's driving me BONKERS.