Is my plant too small for Week 2?

Plant looks fine for week two, only a little undersized. I would make sure you're getting adequate light schedule and intensity. anywhere from 16/8 to 20/4 would be my recommendation for vegging photoperiods and autoflowers.

The problem is trying to grow an auto at 12/12! Autos NEED 18/6! You may be better off starting again if you are hoping for a decent yield.

i like to have my light distance at 24 inches and adjust the light with photone app for par reading. why are you only giving your auto 12 hours of light? she should have minimum 18 hours on 6 off. thats the problem

Every plant is different, so comparison, especially at just two weeks old is pointless in my opinion. She looks evenly colored and happy currently. If you think your grows are staying small as in short? Raise the light just a bit and see if anything changes for you. Also, it looks like you’re hitting a lot of water in one area. I’d make sure to be more consistent around the whole radius of the plant. This is just looking for anything I could and being extra. Overall things are looking fine to me

If U have led light set dimmer approx 20-25% and keep distance 40-50 cm Or have a MH , HPS 250w 50cm, 400w 60-70cm

For me she is ok.

It is likely both situations combined . They don't need intense lighting when small. Making them work to catch light promotes growth. There is a limit