I need a little advice with regard to toilet training DS.

He is 2 year, 4 months and we started toilet training around 3 months ago, but only got really serious about it in the last month or so.

Every time I take him to the toilet he will do a wee when I ask him to. However, he has not started to ask to go to the toilet, I always take him every 20 minutes or so. He's happy to go when I take him, so it's not a nightmare to do it or anything, but he's just not picking up to ask when he needs to wee. If I leave him he'll just do it in his undies and it doesn't bother him in the slightest.

I really wanted him toilet trained before winter came along, but it's starting to get cooler now and I really don't know whether to keep persisting with it or just let it go.

What do you think? Your opinions would be greatly appreciated