I am sorry to take so long in answering, I have been on vacation.
To answer your question, yes, that will help. But, the trouble with the IR is the stronger hit at release time. Not to mention the cost of many pills.
I would look into extended release. Or an even better solution might be Vyvanse. It lasts longer then XR and has a smoother release.
Hope this helps. Please post if you need any more info.