In my personal devotions as of late, I've been using the NT75 plan that we developed and implemented as a church a couple of years ago. It was a huge hit and I was at the point where I had spent a lot of time in the Psalms, so taking big portions of the NT was a fresh change.
Two things I've noted, not that you haven't already grabbed hold of these yourself, but I'll say them anyway.
First, if I don't read slowly enough, I will miss some things. There have been daily assigned readings that I have simply blown through to get them done. But the times I've slowed down and savored what I was reading, it has been glorious.
Second, the 4-chapter-a-day approach is good for a while. I have engaged with some broad themes and have seen some larger picture sights that have been good. I have also, of course, been challenged by particular verses and commands. But I'm also ready to settle down back into smaller, thought-provoking texts. I'm not sure what book is coming next for me to digest, but I'm going to work through it bit by bit.
So whether you're in a season where large portions are good or smaller are what benefits you, I encourage you to be in the Word and really be in it. Slow down. Don't skim. The time will be worth it. You'll never look back and say you wish you would've got up from your Bible earlier.
But that's just me thinking thoughts...