Dear Ravenclaw,
Do not fret about your process. You have already been grieving for a long time in anticipation and preparation. This is allowing you to be more at peace in these moments and will help you stay strong after he is gone.
If he is sleeping peacefully, let him rest. Hold him if YOU need to. There is no right or wrong way. It is okay to give a little space. It may very well be a gift to him to be alone with his own reflections in the moments between waking and sleeping and even beyond that.
Honor your wisdom and be kind to yourself. You know what is right and are doing just fine. It is good to reach out for support.
Sending hugs and thoughts of peace and love,