Continue praying even when you don’t feel like it. Raise your hands up in du’a even when you feel you have no energy left, emotionally or spiritually!
Push yourself to open the mushaf even though you feel helpless, dejected, and broken.
For indeed, little drops of water make a mighty ocean. These small efforts will increase your good deeds in unimaginable ways. It’s these small efforts that will help remove the rust from your heart, erase your sins, and strengthen your fight against the shaitan! So, keep going.