Setting aside a block of time each week lets you review your project plan, timelines and pre-requisites. It also lets you gauge whether you're still on track with deliverables and if you must make any necessary tweaks to your plan. I review all of the planned activities at least a week out and make sure everything is aligned to execute those activities.
I recommend creating a two-month view of the project, no matter what the size. With that in place, it's a matter of confirming that you're still on target.
At the end of each day, schedule an additional 15 to 20 minutes to look at the next day's schedule. I make sure all the meetings and activities that my team is managing are well-planned, scheduled and confirmed.
It may seem tedious but spending time on scheduling will help ensure you stay on top of your plan and know that it's on track.
Do you schedule time for your planning? Is it worth it?