How to change certbot verification method

I used manual option with certbot to verify dns of my domain because at that time I did not have open port 80.

Is it possible to switch now to automatic http challenge in order to automate process without requesting new certificate?

My OS is FreeBSD 11.1.

Command I used is:
certbot -d MYDOMAIN --manual --preferred-challenges dns certonly

Requesting a new certificate is probably the easiest and safest way.

If you really want to avoid it, you can also manually edit the renewal configuration files in /etc/letsencrypt/renewal/ and change the settings under [renewalparams]. Make a backup first, and test your changes with certbot renew --dry-run to make sure you didn’t break anything.

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We also support changing that with certbot certonly --cert-name [yourcertname] --force-renewal -a webroot -w /your/webroot/directory, for example. (This will issue a new certificate in place of the old one while changing the authenticator.)

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