I hope someone can help me. I have been watering my bonsai diligently.
I hope this means only when it is required. Meaning that you check its depths [not just the surface] and water it completely when it needs it.
Sadly, Watering errors are the #1 cause of bonsai deaths...
Right now, it has a few leaves on it but it looks like the trees outside. Dormant.
If it is a holly [IE: Illex Crenata= Japanese Holly that is evergreen, Or Illex Serrata = a deciduous shrub] it is a tree that requires a dormancy and would prefer to be dormant outside.
This requires some preparation, First we need a positive ID.
Is it or have I killed it?
Too soon to tell.
Check it this way, Use your thumbnail to scratch the bark [through to the cambium layer] in an unobtrusive spot. If you see a bright pale green it is still alive-ANY other color tells a different story
. [IE: Tan, Brown, Etc ]
Do they have cycles like the trees outside?
Normally Yes, Because your tree should be outside
[If it is an Illex].
Please post some pictures of it [Complete Tree, Foliage, and soil shots also.] [url=https://www.helpfulgardener.com/forum/viewtopic.php?t=3557/url]See these photo tips[/url]
It would be helpful for us if we knew more details about where you have been keeping it. IE: The light it gets, Temps, Your watering/fert regimen, Is it in any drafts, Etc...
The more info the better, Help us help you.
Here are a few links for you to read to help you learn a bit about bonsai:
About Holly bonsai:
A bonsai introduction: https://www.bonsai4me.com/Basics/Basics_Intro.html
About watering: https://www.bonsai4me.com/Basics/Basics_Watering.html
I hope you take the time to absorb these links [As well as the others available on those websites] as there is a wealth of info/experience there.
You should find it all very interesting/confusing/helpful....
Hope it helps some.
Looking forward to the pictures.