I believe this plan is best suited for more mature believers. Because the first 69 days of this challenge are spent exclusively in the Old Testament.
In fact, this isn’t a “study” at all; rather it’s a reading plan designed to help you understand the big-picture narrative of God’s creation.
Taking on a new challenge aways sounds exciting but after about the first week or two, that new-found motivation is gone and you’re faced with the same old habits.
If you’re going to endure all 90 days you need to first give your word to yourself and to God. Take a minute to quiet your mind, be still and pray.
Now that you’ve genuinely made the commitment to read the Bible in 90-days, you can expect that there will be days you don’t want to spend time in the Word.
If you’ve quit, given up or let life get in the way of other commitments, it’s wise to set up some accountability system or framework.