I have been keeping the humidity levels between mid 55%-60% (one person told me they hatch at 55% someone else said 60%)... This is day 9. I checked the levels last night before I went to bed and it was 57%... When I woke up this morning the humidity had dropped to 37%. I don't know that the heck happened! I added water asap and brought it back up... Are they most likely dead?