Whatever it is you’re chasing after in this Dunyā (world) at the expense of your Ākhirah (afterlife) I swear by Allāh it will perish, and only that which is with your Lord (ﷻ)  will remain.

He commanded with worshipping Him not only in Ramaḍān but until there comes to us certainty (death). We have been commanded to fight our desires up until the very end.

O mankind! Be afraid of your Lord (by keeping your duty to Him and avoiding all evil), and fear a Day when no father can avail aught for his son, nor a son avail aught for his father. Verily, the Promise of Allâh is true: let not then this (worldly) present life deceive you, nor let the chief deceiver (Satan) deceive you about Allâh. (Sûrah Luqmân:33)

The Prophet (ﷺ) said: "Whoever observes fasts during the month of Ramadân out of sincere faith, and hoping to attain Allah's rewards, then all his past sins will be forgiven." [Sahîh al-Bukhârî, 38].