Forgot to say 'Veten Tal U'Matar', finished the blessing 'Barech Aleinu' and hasn't started 'Teka B'Shofar'?

Forgot to say 'Veten Tal U'Matar', finished the blessing 'Barech Aleinu' and hasn't started 'Teka B'Shofar'?

Unlike someone who forgot in 'Shma Koleinu' and can say it before 'Retze', if he remembered after finishing 'Barech Aleinu', he cannot say it before starting the blessing 'Teka B'Shofar', but he should not say it in 'Shma Koleinu'. However, if he fears that if he does not say it immediately, he will not remember to say it in 'Shma Koleinu', he can say it before starting 'Teka B'Shofar'. The reason is that there is a dispute among the early authorities whether he is still considered to be in the previous blessing if he has not yet started the next blessing, and the halacha is determined that he is indeed considered to be. But all this applies to cases where, if he forgot to say, he must return and pray again [such as 'Ya'aleh V'Yavo' in all prayers of the holidays and on Rosh Chodesh in Shacharit and Mincha]. But when he does not need to return and pray again or he can complete it later in the prayer [such as in our case with 'Veten Tal U'Matar', which can be said in 'Shma Koleinu'], he should not say 'Veten Tal U'Matar' after the conclusion, and therefore he continues as usual and says it in 'Shma Koleinu'.