Also if you are going to scrap that plant and start again use a clean (unfed) soil, put your seeds into solo cups and transplant into that soil later that way you don't waste it.
Another tip of advice I can give you is to start a grow diary here from start to finish updating it regularly, that way we can all follow your progress and we can see how the plants develop and point out deficiencies or problems early on. Because in my humble opinion that plant at 7 weeks is long gone, it's not worth trying to save and continue with it. If you have the seeds, scrap it and start fresh.
This community will help you along the way, but we need to be informed to be able to give you proper advice. So starting a grow diary here might be time consuming but it might save your plants later down the road, I wouldn't be were I am today with my plants without the help of everyone here.