I have a bun with character in the form of a floppy ear. (the below pic was about 3 weeks after he came home)

We knew when we brought him home that he had had an accident with his siblings and our breeder believed that he was stepped on. We expected the ear to stiffen and it hasn’t. Some nights Bunners gets really cuddly, and loves to have it rubbed and it seems to stand up a little better, but has never really stood up on it’s own.
All that aside, the floppy ear gets quite a bit of white/clear waxy buildup in the front of the base right below the top of his skull (Its the fold closest to his eye in the picture). He will sit very still and let me rub in his ear with my fingertip, ( I don’t have to actually go inside the ear) but I’m wondering if there is a better way to clean? His upright ear does really well, no buildup at all, and he doesn’t worry his floppy ear too much, but I wonder if that’s because I pay so much attention to it being clean and healthy.
I really don’t want to use any Q-Tip type object, but I am looking for something more like an ear drop, etc.
Any suggestions??
Rach