Start over. Already told you.
Your plant has undergone wrong lighting, worng soil, you got like a 5 gallon pot full of seed starter soil. Go buy some organic soil, check the nute levels on the package, start you seedling in a smaller cup and do this thing called "transplanting", I'm sure you can google it.

Get rid of you current plant, just let it go, it is not going to make and this abuse set it back quit a bit. Not worth the time and effort.

Do some research, apparently you grew outside in the past, after reading your old posts it seems like you should have some common knowledge with horticulture. Do some research, we are not here to hold your hand and teach you ropes, you get out of it what you put in.
Lit Up Reviewed by Lit Up on . First Grow, Log one Hello everyone, I have a few questions... This plant is about 2-3 1/2 weaks old now. Should it be only this big? So far Im doing the light scheduals sort of random, Atleaste till I get a timer. But Im trying to keep it at 18/6. Though I sometimes am off give or take a couple hours. Theres a little yellowing on the bottom leaf you can see in the picture, Doesn't the bottom leafs turn yellow and fall off, Is this normal. I don't have much money for a ph testing kit and all the things. Rating: 5