It seems like you forgot to "charge the clicker" ie click treat click treat click treat (repeat 20 to 30 times) and it also seems like you might need some clicker timing practice. Gary Wilkes - as per link, suggests throwing a ball in the air and trying to click when it's at the top of its arc, when it lands and again for any bounces. It's not easy but practice helps you get better, and the better your timing, the less confused your dog will be.
Initially you do have to treat for every click but eventually you can string actions together and click each one and only treat at the end. Or treat randomly.
If you're worried about how many treats your dog is getting, cut them up into smaller bits. And ideally the treat should be something soft like cheese or sausage or a bit of roast meat, and small is about 1/4 the size of a five cent piece and as thick as two five cent pieces, and even smaller for a small dog.
I tend to work in five minute sessions or as long as my dog stays focussed. I count out 20 to 30 treats for what ever task we're working on eg remote drop, and we practice until I run out of treats. And I try to up the standard every five treats to ten treats or so, ie she's getting it rightish, then only treat when she gets it really right.
So for remote drop, intially (I don't use clicker much) but I mark (Click or good dog) for when she "waits" in place, and again when she comes when I call, and again when she drops when I signal, and she gets an average treat for dropping at my feet after the signal and a bit of roast beef if she drops the instant I signal - ie away from me. But you have to click the drop when she drops and then walk up to her to deliver the treat.
And just to stop the recall from becoming drops only, we practice the standard one as well.
The other thing I'm working on is clipping nails. So I tell her good for every time she lets me touch her nails with the clipper and when she holds her paw steady instead of trying to get it away from me. And really good treat for when she allows me to clip or hold her on her back in my lap and put the clipper around her nail. We're still working on the lap dog thing, she's not real keen on me putting her upside down but won't do it for herself yet.
How long it takes for your dog to connect click with good dog/treat/ warm fuzzy feeling depends a bit on your dog. Charging the clicker usually takes several sessions ie 30 treats times three sessions, usually like one morning, one night, one the next morning. You can tell it's working when your dog starts doing tricks voluntarily in the hope of getting a click/treat.