To wake up in the middle of night is the most precious opportunity to make the dua which is most dear to your heart because it will certainly be accepted. Our Prophet ﷺ said that if someone wakes up during the night and says the following words then any dua which he makes after them will be accepted:
La ilaha illaallahu wahdahu la sharika lahu,lahul-mulku wa lahul-hamdu wa Huwa ‘ala kulli shai’in Qadeer, al hamdu li Allah wa subhana Allah wa la ilaha illah Allah wa Allahu Akbar wala hawla wala quwata illa bi Allah.
There is no God except Allah, the One and Only, no partners has He, for Him is the dominion and for Him is all praise and He is the owner of destiny upon all things. All praise and thanks to Allah and how perfect is Allah and there is no God except Allah and Allah is the Greatest… And there is no power and no might except with Allah.
I would suggest that you make a habit of writing your duas that are important to you and so this act of writing will sort of engrave this thing in your heart so much that when you wake up in the night you will remember to make your dream-duas!!!