You probably needed to add at least 1" of shavings to your coop a couple weeks ago. When the snow melts things get really wet here in Iowa. My horse stalls require twice as much bedding. Also the moisture level in the manure freezes while the weather is cold and keeps it from breaking down. Warm weather thaws it releasing the moisture and causing the manure to start breaking down in over drive because the freezing has already broken it apart for the bacteria and micro bugs to get to work on it. If you want to do deep litter method then at the first sign of a thaw your going to have run out and grab some more bedding to be ready to counter the sudden moisture increase.
Personally I don't like the deep litter method. I might use it if I had a dirt floor but I have 170sq ft of coop with a nice wood floor. I bed fairly deep, 8bags, in the fall and it lasts until spring with just the odd addition of a bag under the roosts. Then strip in the spring, pile it all on a garden plot to turn into compost, and refill with about 4-5bags. Clean as needed all spring-fall. Then strip down and bed heavy for winter. I do similar with the horses. Maintain light bedding from spring-fall doing moderate cleaning as needed. Complete strip downs before and after winter and bed deep during Dec so it lasts over the winter.