iTunes restore taking long time
My phone has been glitching, fast draining battery, etc so the Apple Tech on the phone advised me to restore my iPhone 6. I connected to iTunes, did a backup, restored my iphone, set up as new device, and hit 'restore from backup'. That was 3 hours ago and it still says I have 4 hours to go. Should I wait it out? Should I stop it and abort the mission? How else can I get my stuff back??
Thanks!
iPhone 6, iOS 9.3.1