Indeed!
Also from an Ayurvedic perspective (which I recently started studying), the belly breathing is considered the "kapha dosha" breathing, that is the "most relaxed one" across Doshas (fundamental constitutive types). This also helps the diaphragm to move and get relaxed, helping energies moving more freely in the body.

Aside that all what you are doing is good. Take care of not "somatizing" eventual stress you have during the day, as that would become partially unconscious, and it would be a little bit harder to remove afterwards. In general, it will be great if you observe yourself how you react to different things in your life and that will create an awareness filters of what will really go into your subconscious.

Thank you for the appreciation. Very glad to support (and hopefully help)