Autoflower plants drooping? Stems thinner at the bottom than middle

[Xaloty]

Hi, I wanted to know if anything if wrong with my plants since the stem thickness

isnt looking normal for me. I am a first time grower so I am looking for advice since I dont know what the problem is, Ive read that this could be a sign of drooping, but im not sure.

 

[namvet25]

Nothing to worry about but you could add a little grow mix around stem.

 

[juagaerheld]

I had issues from overwatering to under watering, I water every 2-3 days now when the soil feel dry, the leaves usually get a little droopy after I water but never like this, is this normal or am Kodi nox I overwatering?