I’m so glad it’s not just my kids rooms that are messy 
Very very cute 
only way to tell at this age is by checking pores.
Spike should get used to you after a while, but it’s not a problem for him/her should they drop their tail.
Below is a guide if you wish to try sexing. I hate sexing geckos but I’m inpatient and great to learn if your planning to breed.