This is known as intinction. When I was a child, it was the norm for Easter and other special occasions for the priest to perform the intinction. SELF-intinction (dipping your own Host into the Precious Blood) is never permitted. I am not sure about intinction performed by the priest.
Finally, the pope can do as he wishes when it comes to most liturgical norms and laws (not moral laws). He is the absolute supreme authority for all three “branches” of church governance.
Intinction is the only norm in the Maronite Catholic Church. It is reverent - and beautiful.
Both last year and this, I noticed the Holy Father distributing communion by intinction to the newly baptized candidates at the Easter Vigil Mass. Not sure why he limits it only to them.