Help needed please my girls are going!!!

Hi everyone , wondering if you can help me please, i have a tent set up this is the first grow in it, everything was going well untill couple of days ago, i noticed that the top of the plant looked burnted. So i lifted up the light as far as it goes and it seemed ok, this morning i had a look now only on the plant that was scoarched the plant seems to be wilting, the buds are now bent over and all leafs are drooping. i noticed that i hasnt really drunk that much water/feed over past few days. I have chopped the burnt leafs off the other day but to find that like that this morning is so depressing, does anyone know of any ideas to get her going again.
many thanks

stress can make it finish early

is there anything i can do about that, the buds on the back and bottom are fine they look great just towards the top they are all folding over

Sounds like heat stress or over watering too many factors here-Buds will lean over if too heavy-dropoing plants can mean too much water and roots can't breath-have you been spraying your plants this will cause heat stress too-Is temp in tent ok..

Here are some pics of my girls, any ideas guys can i rescue them