Ready for 1 nap?

I'm really not sure what I should do and here's why: my 13 month old seems to be ready for one nap. I tried to wait as long as possible but if I do 2 naps his schedule looks like: he wakes at 8 or 8:30 first nap between 11-12:30 then this take the second nap to 5 minimum and I try to make this short but he simply refuses to sleep and the time it takes, taking the nap is either not a good idea anymore or it is very late and pushes his bed time way too much (like 9-10 pm even 10:30 sometimes) and we feel it's not the best for him.

The thing is when he takes only one nap it seems like the best natural thing to do right now BUT his nap is not long enough! So if he falls asleep at 7pm since he only took one nap and wakes up at 7-7:30, his nap is earlier but ideally he should sleep 2h minimum! but always sleeps max 1:15-1:30! 😩

And when he does take one nap he falls asleep so much faster at bedtime.

Sorry if thats long and complicated but I'm just not sure what to do 😂 I'm worried his not sleeping enough? and that he will get sick or be in sleep debt on the long run. He's also teething canines and first molars at the same time which doesnt ease the process.