Responding to the comment above it seems to be more natural then you think. The toads will go into a state of dormancy roughly around a month to four months possibly being the longest. this is not brumation because the temperature and conditions do not get down low enough but the toads internal clock tells it to begin slowing down. So the toad responds to the time of the year and it sleeps.
I have heard many keepers of the species talk about this, and I also have a toad in my care who has done this every year for the past 4 years and he is still with us. If you let the toad alone meaning you do not touch the toad and you allow it to rest then it should be fine. you can still missed the enclosure and give freshwater as you normally would in case the toad wakes up and needs to hydrate. If you need more information on this part I can help you. I'm using my voice command on my phone so I apologize if this sounds long-winded.
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