receiving communion on the tongue

[Aramis]

I agree with you, but again the canon says, “grave” doesn’t it? A sickly child in a remote location with no available cleric and the bishop’s permission would satify the canon, don’t you think?

The canons also put grave at “More than a month before the next priest is expected”… even if no risk of life is present… for both marriage and baptism… under the more stringent CCEO rules for the Catholics of the Eastern Rites.

And no, the current CIC canons do NOT specify a time limit for the Roman Church.

THE MINISTER OF BAPTISM

Can. 861 §1. The ordinary minister of baptism is a bishop, a presbyter, or a deacon, without prejudice to the prescript of ⇒ can. 530, n. 1.

§2. When an ordinary minister is absent or impeded, a catechist or another person designated for this function by the local ordinary, or in a case of necessity any person with the right intention, confers baptism licitly. Pastors of souls, especially the pastor of a parish, are to be concerned that the Christian faithful are taught the correct way to baptize.

Can. 862 Except in a case of necessity, no one is permitted to confer baptism in the territory of another without the required permission, not even upon his own subjects.

Can. 863 The baptism of adults, at least of those who have completed their fourteenth year, is to be deferred to the diocesan bishop so that he himself administers it if he has judged it Expedient.
vatican.va/archive/ENG1104/__P2W.HTM

Just necessity. And necessity even abrogates the need for the bishop’s permission.