I remember this pain.
My DS is 9 months and has never, not once, napped more than 3 times a day and most of those don't reach an hour.
About 3 weeks ago I put him down crying as he's had a feed and was ready for bed but teething so I went to get Calpol as he was in pain. I came back up to his room and he was asleep so I left him to it. He then slept through the night! So it is possible. I don't know what happened but I was very surprised and now he sleeps through bar one night when he was full of cold.
We start bedtime every day at 4:30pm, it's dinner, bath, pyjamas, feed, cuddle and into bed awake. He's usually asleep by 5:30 and takes about 5 minutes to fall asleep without crying.
He wakes up at 5:30-6:30 every morning which some people might say is too early but that's a full 12 hours in one hit. And tbh I'd rather have an evening to myself than a later start to the day. It just depends on what you want.
He naps twice a day usually (once at 10:30, once at 2:30) or has one for a full hour around midday.
All I can say is as long as your LO is full, clean and dry then put them down and see how they go. For most of his life DS would only fall asleep on me or in the pram, and woke up 3 times a night, then that one night I put him down and he slept through by himself!
I hope this helps and good luck!