You lawn is likely not dead. It is likely dormant waiting to be revived. If you have bare patches (not a dormant lawn) think about seeding not reviving.
Check out this HowCast video below and be sure to read the bullets below that with additional helpful hints…
- Try to stay off of it
- Water it – please use a sprinkler (but be committed to continued watering)
- Provide the lawn with a boost of food. Try an All Natural fertilizer to start with that has Nitrogen and make it a hose-end application product as that has great absorption