Hi,
Congratulations.

The water could be too deep ?
Make a ramp/beach/really easy access out of the water.

You could even make the water all the tads are in more shallow.

Once they are 'out' - with a wet gloved hand , I would move the tad into another tank with VERY( soppy) dampened paper towel substrate.
( de-chlorinated water only )

It's a tough time for them.

Have pin head crickets or hydei fruit flies ....ready to go.

So cute ! I'm so sorry he didn't make it Hang in there !

Let me know how you make out.
Give Cory a shout? PM him ( View Profile: CJ PELCHER - Frog Forum )
If he is not on really soon - got to his web-site and contact or call him !

Lynn