M.B.
Our pediatrician told us not to bother with potty training until our son turned 3- while some boys learn earlier, the bulk of them aren't ready until they're at least 3-years old. Also, a lot of those younger kids (boys and girls) who learn early suffer regression later and then have to be potty trained all over again. And who wants to potty train more than once per child? :)
My best tip is to approach potty training with a positive reinforcement system. If your son knows that you're stressing about it, he'll stress about it too, and it's downhill from there. With our son we bought a couple of potty training books and gave the books and the potty at the same time as a present. Then we made a HUGE deal out of it every time that he used the potty- Wow! What a big boy you are now! I'm so proud of you!! I hope you're proud of yourself, too!!! When he had an accident we were really low-key about it, just said "Accidents happen, no big deal. Let's get you cleaned up and try again later." and then left it at that.
I also spent the first week or two pumping him full of water, milk and juice and then hourly having him try the potty. And really, that's about as long as the training took.
As far as your daycare goes, possibly you could just tell them that you're in the process of potty training, but that it's going to take as long as it takes and to please be patient? Maybe being reassured that you are, in fact, doing the potty training is all they're really needing?
Good Luck!
M.