i took a look at your girl, you should not worry about the first set of leaves. i would say at the 2 week mark 2 of my girls were bigger but then again i had some problems at week 5 with all of them. and the one who was born sick was way smaller than than yours at week 2 and still it's not that bad. you have 2 weeks ahead with rapid growth 1-2 cm a day.
Got some pictures for you so u can have an ideea what to expect because auto jack journals or pictures a hard to find
First one with the sun glasses is the forever sick one and then the other 2
again bare in mind that the sick one between week 5 and 6 lost maybe 3 leaves a day now she loses 2-3 leaves every 3-4 days. new growth looked always good
https://anonmgur.com/up/3cbb2cf7205646c5a3e98b619d944ff6.jpg
https://anonmgur.com/up/55caf0cbb287dfaf61e8c0d369189252.jpg
https://anonmgur.com/up/fc2a21599e2ced2510070515044726a8.jpg
if you have any info regarding auto jack journals i would like to take a peak at the link
also curious to see what happens under led light because growth seems comparabel to hps till now.
Best of luck!