We are encouraged to take time and remember Allah after every prayer. This is important after the fajr prayer.
At least recite “SubhanAllah, walhamdulillah wa Allahu Akbar” 10 times. Reading adhkar after salah in the morning is better than reading the Quran during this time. Why? Because it is prescribed for that time.
We see the Adhkar as Sabah is very long. Just try to recite two or three pages and increase it from there.