I rinse and dry burn once every week or two. When ever it need it really. I just blow out my atty every day. I'm still using the atty that came with my 510 kit and one LR atty that I've had for well over a month maybe two. I've yet to touch one of the backups that I bought.
I did ruin one by pulling the wick, don't do that. It doesn't even drip right now. Now that I know better a dry burn would have solved my problem.
It just takes a while to find what you like to do with carts, filler, etc. I just drip and don't bother with any of that filler bs. Too much of a pain imo. Dripping is about as consistent as it gets.
Blow out your atty from the cart end and drip 3-4 drops directly onto the bridge of the atty and take a couple of hits. You'll be pleased.