Auto has slowed growth alot

Gently placing a plant in a larger pot and covering it will not shock the plant. Did the rootball fall apart in the process? If potting up regularly causes a shock to the plant, i'd suggest a different hobby, LOL... i say that assuming this is not the case and likely some other cause behind it. e.g. looks like that soil is devoid of drainage amendments... if coco-based should be 33% of volume and if something heavier like sphagnum peat moss-baed, you want 50% of volume. I'd recommend vermiculite over perlite, but it's mostly insignificant which you choose as long as it isn't big and chunky to the point it physically impedes roots. could be genetics too.. growth rates vary by seed even when the plants are supremely healthy. that drying pattern looks like you aren't using orthodox watering methods, either. Fully saturate and never partially water. if such simple things cause a problem or droopiness following an irrigations, then it is the fault of how the medium was constituted. It's a myth that you shouldn't pot-up autoflowers. Just something that gets repeated but is not true. Potting up wil not shock a plant. However It definitely helps promote a healthy rootball development, and it avoids fucked up irrigation methods trying to mitigate the numerous real problems of having a tiny plant in a very large pot. Way more risk related to a tiny plant in a large pot than gently potting up. With enough moisture and roots, it will hold itself together through the process. Shouldn't be potting up before that point anyway. "Transplant shock" isn't related to potting up. That term refers to cutting through roots of plants outside in the earth, which is incredibly stressful for the plant. I think this myth stems from a misunderstanding of vocabulary....

Just give it some roots enhancers to boost the roots development, like mycorrhizae, with humic and fulvic acids it will kick back quickly

Hey yo Garys_Mod_Green! Transplanting autos is always a bit risky because their internal clock is ticking, and any stress can cause a temporary stall. It's totally normal for her to slow down for a few days while she fixes her roots and gets used to the new home. At day 16, you still have some time before she hits the big flowering stretch. Just relax and let her adjust. As long as she stays green and healthy looking, she’ll bounce back. In the future, many growers find it easier to start autos in their final pot to avoid this "transplant shock" altogether. Give her a little time, she'll be fine! Happy Growing, Growmie!

Hi Transplant shock ​Automatics hate being repotted because their internal clock doesn't stop. If growth has stopped, it is because the plant is focusing all its energy on repairing its roots instead of making leaves. ​ This is a setback because it has a limited lifespan (around 30-40 days of growth before flowering automatically). Each “lost” day reduces its final size. ​However, she looks very healthy. The green is perfect and the new leaves are not distorted. "Relax and adjust" ​Don’t do anything drastic. No massive fertilizer to “grow” it, you would burn the fragile roots. ​Light: Keep intensity moderate. Too much light would force the plant to photosynthesize when its roots cannot yet follow. ​Watering: Water gently around the plant (not at the base) to encourage the roots to expand into the new pot. Verdict: Relax. She will leave in 2-3 days. It might be a little smaller than expected, but the Jelly Donutz is resilient. ​Did you use a root booster or mycorrhizae when repotting to help it?

Well.. you identified transplantation as cause yourself. So I wouldn't do something exotic even if someone tells me to😅 did you mess up (drop, rip off) during transplantation? If you done it gentle without accident it could be the seed or something else. If your light doesnt shift the coloration too much perhaps a bit more n would be beneficial.. otherwise roots or ph are always options. Anyway, if the plants you compare arent the same genetics Id say everything fine. Good luck Likes Entfern