Hey everyone, do you have any advice on what to do...

Put it outside to get some wind or move some little fan blowing on to it. Silica could help some. Also staking that lanky plant might be good idea.

They are looking great!! Adding silica could help, but I like to train my stems by constantly getting my hands in there and bending them down. Keep twisting the tops and dont break the outside stem, but the fibers on the inside and it helps build that cell wall!💪💪

You can use a thin bamboo stake/ wooden dowel to temporary help support the main stem by loosely tying it in a couple of places in a figure "8" pattern until it strengthens up. She also may be reaching for more light. Also excess nitrogen can cause too much stretching between inter nodes Adding silica to your nutrient regime will help build stronger sturdier stems.

Put the pot on some books to get it closer 2 the lights (1,4m for seedlings could be bad depending on wattage ofc). Make sure she gets a light breeze of air (promotes a thicker stem). Cheers