You're doing wonderfully! Potty training is kind of like quitting smoking is for adults -- different for everyone. Some folks drop them 'cold-turkey', some use a 'crutch" (patch, gum, or other meds), and some just cut back 1 cigarette a day or something until they've totally quit. I think with toddlers, though, it's probably 98% gradual. Every time he used the potty, it's that much closer to him doing it every time. Just praise him each time with 'Good JOB!' or some similar phrase. Unless there's some mental or physical challenge, most kids use the bathroom by the time they go to school! ; )
I always loved potty training (my 4 kids, now 33, 30, 24, and 22, and grands 8, 4, and 3). I had all of mine fully trained by their 2nd birthday, but that was because I wanted to, and they enjoyed the sense of independence it gave them. My daughter hasn't been quite so diligent nor successful with her 3, but it's all good! LOL
Oh, and I was blessed to find that ALL my children started sleeping 'dry' through the night before they were trained. One kid slept dry all night before s/he was a year old (I don't remember which one, tho. LOL) As soon as he stirs in the a.m. go to him and take him to potty. This was usually the first step toward my success. The 2 boys had a few nighttime 'wet' accidents after age 2, but neither of the girls did.