Here's where I see things totally different than just about everyone else on this site apparently.
My way of thinking is I wouldn't leave them in those little plastic pots more than maybe another 10 days or so.
I would spend that time gathering materials to make a really good very aerated soil, specifically a Clackamas Coots soil recipe.
With lots of rice hulls, pumice, biochar.
Get the biggest FABRIC pot your space and you can handle, but at least 7 gallon if you're going to bottle feed.
Double that if you were to do a Living Organic Soil.
Layer the soil in the pot and every couple handfuls wet it down so when you're done the soil is no longer hydrophobic and is evenly wet from top to bottom.
Then let that settle a few days.
If you start out with proper soil with plenty of aeration in fabric pots then it would actually be difficult to overwater, and the plants roots get plenty of oxygen.
The root mass will also get far larger because of the air pruning and you wont get root bound.
Then carefully transplant to their final pots.
Downloadable PDF Guide. Have you ever wondered how soil companies find the perfect recipe? Learn the secret to building your perfect organic soil.
buildasoil.com