3 week old plant - not tall enough?

Seed type: The Church (Will add a picture tomorrow to help...)
Outdoor grow averaging 9 hours of sunlight a day
Watered every other day
Fertilized with dry rabbit pellets (Droppings)
Roughly 6 inches high atm & currently 4 nodes deep but with minor curling...

Can anyone offer any idea's/tips on how to make any improvements or is this a normal hight for this stage?

Thanks

Seems small. Pics will really help, what size container? Soil? Antarctica? Blah Blah
My tips are smart pots, happy frog soil. I have never heard of using rabbit poo before, is he a pet? or meat farm

Thanks for the quick response, have a random set up going on but it's keeping them safe, protected by a unused large parrot cage, with a few sheets of glass to help project the light, inside roughly 5 litre pots, average normal soil, an its in sunny old Southend UK (by the sea...)
The rabbit is a pet unfortunately.... Was recommended to me as one of the best fertilizers, so why not give it go.

Well... here is a pretty good reference
This is my plant


Started late season from seed 7/19

1 week-- 24/0 after sprout
Then put outside in 5 gallon container with a supersoil/compost/amended groundsoil mix
It has been about 2.5 weeks since the transplant; daylight hours in my region are 13.5hrs & dropping
(she gets ~12 hours DIRECT sun a day)

She is 3.5 weeks old and looking very happy just about 8" tall & growing bushy as fuck

If the rabbit poo was green & not seasoned the nitrogen will not be available for the plant. Soil microbes will have to break it down first and the nitrogen will become available as they die off. You might need to provide supplemental food in the meantime. Also, how many hours of darkness is it getting? You might need supplemental lighting too.