Husband and pulling out

So my husband and I use the pull out method. I cannot be on birth control and he refuses to wear condoms as he cannot keep it "up" when he does. We used this method for 8 years and he always, always pulled out about 10 seconds before he cums. Lately he's been cutting it close, and even a few times he came while he was still pulling out :/ Eek. He says he cannot tell that he's cumming like he used too? Is this normal? We don't have children right now but in the future. ... Is he just getting lazy? Or is this real?
He's 27, I'm 26 so not like he is old lol