How is learning difficult passages of music compare to eating an elephant? You do both the same way: one bite at a time.
Now this probably isn’t news to you. You probably know that you need to break things down in little pieces. The trouble id how to put the pieces back together once you’ve learned each one. The way to do this is by “taping” them to each other.
After you’ve learned each piece of the phrase individually, play the first one and then *only the first note* of the second. Don’t worry about the rest of the second piece. Play that a few times and once that is easy, add the second note. Playing them together will happen naturally, one bite at a time.