Mine dropped his nap about 4 months ago and it took a few months for.him to not be a grumpy mess by the end of the day. If I put him down for a sleep he would end up up after 10 minutes playing roncrying, even after saying he wants a nap.
Maybe it’s worth asking him if he wants a nap and let him have 30 minutes. My little boy has just turned 3 and he’s still having about an hour nap a day. I don’t think he wants to drop it 🙈 x