Autoflower growth pattern quick question.

Does anyone else notice that autoflowers tend to stay really small for 3-5 weeks and then shoot up to more than double in a few days flat. A couple inches daily is not uncommon in this phase.

my nl auto is going throughthat right nowhaha

its making roots
reaching and trying to figure out how much space it has

I'm seeing daily growth with my 2 autos right now, NL and PE. With the PE, it seems like I can see growth by the hour sometimes. they are at 21 days from planting the seed right now.

Thats the stretch from flower most autos start to at least preflower around 3 weeks and should ve into around 5 so maybe thats why