Automatic Renewal of Let's Encrypt certificates

I have configured my website with Let's encrypt using Traefik. The certificate says that it will be valid for 3 months. However I wanted to know if the certificate auto-renews before the expiry.

On Traefik documentation, it was written that it renews automatically after every 2 months. But I noted that for my website, it didn't renew.

Looking for ways to auto-renew it before the expiry. Detailed steps if possible.

This has been discussed recently (post), you can not manually trigger a LE cert refresh.

Ok, I saw it was mentioned on the TRAEFIK doc that the certificate renew automatically.