How long does it take to register a cryptocurrency in Lithuania?

Could you please clarify the process and timeline for registering a cryptocurrency in Lithuania? Are there any specific steps or requirements that need to be met before the registration can be completed? I'm particularly interested in knowing the average duration it takes for the entire process to be finalized. Is there a possibility of expedited registration for certain cases? Additionally, what are the potential challenges or obstacles that one might encounter during the registration process?