So they're normal?
Not even 4 months old is young. Not much you can do but stick to your guns as we say till the munchkins get it. Plus you have 2 so they feed on each other and will be a bit harder. For now you need to do kennel training. Stick to your commands and a lot of praising. Watch the treats at that age as they will expect more and wont listen as much. A bit is good but more praising.
You will find all sorts of good threads in here thst will help you enormously. Other members will jump in n help. Hang on. And we want photos! !!