Quality not Quantity
It's quality not quantity that's important! Not how long(quantity) but how much(quality).
The same lessons applies to us when we read God's Word. It's not how long we read for that counts. Sometimes we can read for a whole hour and be half asleep or have our thoughts going all over the place. Whereas other times we may read for 5-10 minutes and it's really meaningful and helpful to us.
We may be proud that we take so much time to read the Bible, and yet not really be getting anything from it at all.
Or we may wish we had much more time to read the Bible, when the few minutes we do have we learn so much.
Just remember it's quality not quantity!!