What If my mushroom block is dry and isn't producing mushrooms yet?

Try using a humidity tent if you are not already. Take a large trash bag or other large loose bag and cut lots of ½” holes throughout - mushrooms need fresh air to form correctly! Drape the bag over your block and mist the inside of the bag every day. When you start to see baby mushrooms form (pinning), you can remove the bag and keep misting the block.