Seedling not developing

may have a symptom popping up in the leaf, but i'd hold off on a reaction.. can't discern what it is.. might go away as seedlings are a bit delicate at first. could be related to difficulty of properly watering a tiny plant in a bog pot, too. relatively fine.. use a properly sized seedling starter pot and that will help in future... watering is nearly impossible to do in an ideal way when you have a pig pot and tiny plant too. If you don't water deeply, you'll form a less than ideal rootball, but if too much medium is wet (in this context), it stays wet for too long with a tiny plant that can't drink much, which can lead to all sorts of weird, non-beneficial microbial growth would need mroe details to know if it is actually slow or just a perception of slow growth. It has a new growth node popping out, so it hasn't been stagnant. It's just slow at first. make sure when you water, it gets wet all the way to the bottom, andn while the plant is way too small for the pot, only water a small column around the plant and not the entire pot -- looks like you did that to some extent, but can't tell if you watered deeply. Roots turn toward greater moisture, and if you water superficially, it stays wetter on top and you train superficial roots -- again, not ideal. This is one of those often-repeated things by the peanut gallery.. if it's an autoflower, potting up does not shock or stall your plant. If a simply potting up does such a thing, consider a new hobby. I've done ~400 'transplants' and not once seen a shocked plant stop growing as normal. potting up isn't stressful. An outdoor plant transplant is different becuse you damage the roots in a major way and that is crazy stressful, but all we do is gently place a plant into a large pot and gently cover it up... not the same. if you don't magle or man-handle the rootball, all is well. don't treat it like a priest alone with a choirboy and it's fine.