DiscordJS v14 – How to check if bot is already connected to a voice channel?

So I have a problem that when I use interaction.member.guild.voiceStates.cache.get('BOT_ID') it doesn’t update when the bot is already disconnected or being moved.

const getVoice = interaction.member.guild.voiceStates.cache;
const botVoiceChannel = getVoice.get('BOT_ID');

if (botVoiceChannel) {
  errEmbed = new EmbedBuilder()
  .setDescription("I'm already connected to a voice channel")
  return interaction.reply({ embeds: [ errEmbed ] });
}

I expect the value of botVoiceChannel to change to a new voice channel or null when the bot is being moved or disconnected.