Hi
It won't have grown overnight - you have changed its growing conditions without it getting used to being outside. Plus it is colder outside than inside.

Just water it during the evening [avoiding the leaves if you can], on a really hot day and every other evening when it isn't so hot. If it looks a bit wilty, you can water it a bit more. Use tomato feed once a week once it has fruit.

Edited to add: bingo! or is it snap.

__________________
Andrea :wavehello

http://www.growfruitandveg.co.uk/gra...logs/zazen999/

moon trials completed:
tomatoes
[46% increase in crop per seed sown and 10% increase in crop per plant]

currently underway:
calabrese
garlic
Ladies: please do not shave your heads - not on my watch. Normal service resumes 1st Nov.