I looked it up. This is what the Vatican says, as a guide for confessors on conjugal matters:
- The pastoral “law of gradualness”, not to be confused with the “gradualness of the law” which would tend to diminish the demands it places on us, consists of requiring a decisive break with sin together with a progressive path towards total union with the will of God and with his loving demands.43
This sounds to me like the penitent must be ready to break with the sin, not in the future, but ready at the time of confession to make that break with honest intentions…
Read that it is not to be construed as “gradualness of the law” in that you can gradually, at some later time, decide to wean off contraception. Read #11 and #12 too. The person must be actively seeking to change his/her behaviors – this is not a license to continue until he/she decides at some later time to stop using contraception.
Of course, the priest cannot wihhold absolution by a insisting upon an affirmation that it will never happen again. However, if the couple continues – new sin results each time, for which confession is necessary. The priest may suspect that – but it’s not for him to guess as to when the couple will finally realize that they must stop the sinful behavior. He should also examine why they are not open to children that they have resorted to contraception.
But no, they cannot decide to wean themselves off, and select the timing of gradualness. The Church expects that each good confession is met with a good and honest attempt each time not to repeat the sin of contraception, while realizing that many will fail. However, if one confesses with the intention that they will not be stopping, or not make any real attempts to stop the sin, have they made a good confession? One cannot lie to the priest.
I think the person misunderstood gradualness as his/her choice to decide.
They should recheck with the priest or another priest since only the penitent knows the circumstances.
Vademecum for Confessors