Use conditional sleeps when u bury each bone, eg store the valur of bones in inventory then click and wait until the amount of bones in invent is less than the stored value  
Edit; eg: 
if inventory contains bones 
oldBones = inventory.getitem("bones").getAmount(); 
8nventory,".getitem("bones").interact("bury"); 
new ConditionalSleep(2000) { 
   @ Override 
   public boolean condition() throws InterruptedException { 
      return oldBones > inventory.getitem("bones").getamount; 
   } 
}.sleep(); 
Sry for text wrote on phone