On day 8 of bitch’s season, dog tried to mount her 3 different times. Appears he may have mated but they didn’t lock together that long. They spent the day together, he overnighted, spent the next day there as well. After the 3rdattempt to mount, he sniffs, but ignores her as she turns and puts it right in front of him. Everyday since they been together and still no interest to mate with her. He is almost 3, she is 2, labs, he comes from strong pedigree of breeders. This is both their first time. I need help in what to do for my dog to be interested in her. It’s now end of day 12.