I raised some Wood Frog babies last year. From hatching to frog stage took a total of 2 months. I raised Green Frogs once a long time ago. I think they took about as long as the Wood Frogs did. I can't remember.

I had some broad fake leaves that I attached to the sides of the tanks when the tadpoles started to grow all their legs. They would gather and rest on the leaves above water. At that point I would remove them from their aquatic setup for a very damp paper towel one. Within a week or so they would loose their tail and be moved to a regular terrestrial setup. I did the same thing with the Green Frogs back a few years ago. It's been 3 years. I wish I could remember the exact dates each stage was met. I know I posted them on my Facebook. But those posts are lost (I did look for you lol).

Edit to fix typo: I had typed 4 months when it was actually 2 months!