Going off Toprol XL

After taking Toprol XL 50 for ten months, my doctor has said that I can wean myself off it gradually over a few weeks. He's suggested breaking the pills in half, taking only a half each day instead of a whole one. I know that these pills are time released and I am wondering if breaking them in half defeats the time release action and if this is an appropriate way of getting half dosage. Your thoughts would be appreciated. By the way, I also take Norvasc for coronary spasm and I'm staying on that medication indefinitely.
Wendy

[CCF CARDIO MD JMF]

This is a perfectly appropriate way to wean this dose.