help 2 weeks into flower..pics!

ok so my plant is in a 2 an a half gallon pot and is in its 2nd week of flower and all the leafs are starting to curl up and and starting to die as you can see in the first 3 pics..i think it might be root bound??

also some of the leafs are starting to turn black as you can see in the last two pics..i have no idea what this means ideas??

Looks like heat stress

If they were root bound they would just slow growth. Looks exactly like light burn or heat stress.

Ive also seen that after plants were sprayed with neem oil.

yeah but its been cloudy all week and i have another plant and its perfectly fine but in a way bigger pot

how much if any nutes you give it ,if outside dont think heat stress

if inside would say heat stress cuz sure looks like it tho

yeah its like a 15-30-15 nute and i only give like once a week should i stop?

I would give it a rest from the nutes.

ok but i transplanted just in case and it was like 70% roots on the outside could barely see any dirt i think that was it? or is that normal?

Thats normal. They are always rootbound when flowering. They become damn near hydro near the end of flowering. Ya have to water 2 times a day.

What size pot were they in? what size now?

they were in 3 gallons and nor there in like 5 or 6 gallon pots and the plants are about 4ft

Your all good now! You were all good before.

haha alright thanks for the help:] so should the leafs get better? and how many gallons of watter for the twice a day watering?