What is your advice to me for overcoming the extreme drowsiness that overtakes me when I read the Qur’an, to the point that I cannot open my eyes, even if I am fasting?

Drowsiness during Quran recitation is from Satan. Its cure is to seek refuge in Allah from Satan, perform ablution (wudu), pray, and realize that this drowsiness is from Satan who wants to deprive a person of good. This is based on the Prophet's (peace be upon him) saying: "Satan ties three knots at the back of the head of each of you when he sleeps, saying, 'You have a long night, so sleep.' If he awakens and remembers Allah, one knot is untied. If he performs ablution, another knot is untied. If he prays, the third knot is untied."