// Per the docs, it is recommended to create new embeds, but you use the original embed to pre-populate the new embed. Then, just update what you need and edit the message with the new embed:
const oldEmbed = new MessageEmbed();
const messageHandle = await textChannel.send({embeds: [oldEmbed]});
const newEmbed = new MessageEmbed();
messageHandle.edit({embeds:[newEmbed]});