but I was concerned that too many treats was not good.
Depends on what you use for treats. The treats should be tiny – like pea size or smaller. Sometimes I use "Carry-Outs", which are soft and maybe an inch long; I get about 6 treats out of one of those. Or I use puppy kibble -- a different brand than what I feed Keoki -- one piece of kibble is the whole reward {ya gotta wonder why Gypsy -- 70 lbs-- would even care, but she responds very well to those tidbits!}.
And I only give food treats as a reward for behavior, never just to give the dogs a treat. If I want to give them a treat because they are so darned cute, I give them chewies of some sort, or a peanut butter stuffed {okay, not stuffed but you know....} bone to work on. They do not get those type of things every day.