These are toadlets (they look to be American toads), not tree frogs, so you'll need to adjust your husbandry for such.

Here's a couple of caresheets:
http://www.frogforum.net/content.php...ytes-Pelobates
https://animals.mom.me/raising-american-toads-2133.html
https://toadschooled.tumblr.com/baby%20tips