I don't mean to denigrate you, but I must be candid here: hoarding admin rights so that only you have them and no one else can get any work done is simply not acceptable in a team environment.
Going forward, I would recommend taking a look through other projects you may be involved with, and make sure that you are not the only person with admin access. If nothing else, it would increase the "bus factor" to greater than 1: https://en.wikipedia.org/wiki/Bus_factor
Good luck.