YHWY does not equal "Jehovah".
The name "Jehovah" was invented when the tetragrammaton (YHWY) had the vowels from the word "Adonai" (Lord) added to get Yahweh.
About the 13th century the term “Jehovah” appeared when Christian scholars took the consonants of “Yahweh” and pronounced it with the vowels of “Adonai.” This resulted in the sound “Yahowah,” which has a Latinized spelling of “Jehovah.” The first recorded use of this spelling was made by a Spanish Dominican monk, Raymundus Martini, in 1270.
Jehovah is a man made name. It was created by a Catholic monk. The name Jehovah has been removed from most modern Bibles as it is not in the Bible and because it a made up name, that is to say, inaccurate translation.
Prayers to Jehovah are not prayers to The Lord or YHWH. You might as well be praying to Cthulu.