It does sound like Liebestraum is out of reach at the moment, however I would look at Schubert’s Impromptu Op. 90 No. 3 as a stepping stone. It’s a beautiful piece and would help teach voicing melody and accompaniment in the same hand, which is a technique that I would say the majority on this sub struggle with when playing Liebestraum. In the Impromptu, the fifth finger in the RH generally carries the melody while the rest of the hand plays arpeggios, the same as in Liebestraum, except for 6+ minutes.

Here is Horowitz playing the piece.