Well i remove my coco husk every month wash it in boiling hot water then cool it down to a nice warm( i replace it every 6 months completely ).Then i simply replant .Lately i have gotten rid of my plants though my frogs went on a rampage and destroyed them lol( i will replace them eventually). You having a smaller leaf frog wont have that problem .My worry's are always about red leg so i keep a deep substrate and keep it clean.When i had my lizards i would actually buy soil but i would bake it in the oven before i moistened it up and put it in their tank .Sometimes pets are hard to take care of but in the end it was well worth all the hard work.