My stove has a pretty big firebox...I load it down of a night..and I wake up about 8 hours later to just a few coals...last night I let it burn down to coals before bed time raked coals to front of stove...loaded tight with all oak...got it burning good for 15 minutes or so..then shut it down..after it calmed down..it was burning pretty slow...went off to bed...woke up to use restroom about an hour later and looked at fire...burning hard at this point..woke up 7 hours later to a few coals...(at least the house was still warm).anything better I can do?