All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
We ask Allah to grant you steadfastness and bless you to do more good deeds. We advise you to maintain balance between reciting the Quran and serving your mother. Being good with a mother is among the greatest good deeds. Allah Says (what means): {And lower unto them the wing of submission and humility through mercy, and say: "My Lord! Bestow on them Your Mercy as they did bring me up when I was small."} [Quran 17: 24]
If combining reciting the Quran and serving your mother is difficult, then you have to opt for her obedience instead of reciting the Quran and you may allot any other time for the recitation. Hasten to serve your mother even if it is at the expense of your comfort.
Abu Hurayrah narrated that a man asked the Prophet : “Who is most deserving of my best companionship?' The Prophet replied: “Your mother.” The man asked: “Then who?” The Prophet said: “Your mother.” The man asked again: “Then who?” The Prophet again replied: “Your mother.” The man asked again: “Then who?” Thereupon, the Prophet said: “Then your father.” [Al-Bukhari and Muslim]
Allah knows best.