Relative timestamp in embed footer

I want to put a relative timestamp in an embed footer. setTimestamp() doesn't accept strings, so I cannot pass the relative timestamp as an argument. When I use the relative timestamp in setFooter() like this
.setFooter({
        text: `Last Update: ${relativeTime}`,
      })

I get this
Last Update: <t:1714575200:R>

I know it would work if the timestamp was in a description or a field value, I just want to put it in the footer so it can look a little better. Is it possible to achieve this?
Was this page helpful?