I'm not sure if it helps. Normally, Google shows the higher domain rank site even the canonicals are set. (Try publishing a post on your blog and DEV on the same day. DEV post will appear even you add canonical).
The recommended way is using the domain migrate tool in the Google search console. However, you cannot do that because it's on Guthub.io
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I'm not sure if it helps. Normally, Google shows the higher domain rank site even the canonicals are set. (Try publishing a post on your blog and DEV on the same day. DEV post will appear even you add canonical).
The recommended way is using the domain migrate tool in the Google search console. However, you cannot do that because it's on Guthub.io