When your son sleeps the 10 hours at night, does he sleep straight through without waking up? If so, sleeping all night is more of a gift than you may realize. My son was a light napper and totally stopped around two. It stressed me out to not get much time when he was napping (for my own nap or to get stuff done). But as your son gets older and begins to crawl and walk, he may wear himself out and need them more.
Is there anything you can do to make naptime a relaxing, cozy time? I used to nurse our son first and he'd fall asleep almost every time. Relaxing music or a snuggly stuffed animal (or 2, 3, or more) in the crib was a comfort as well. For some people, a swing helps get their child to sleep, but I could never get our son out of it without waking him again and I didn't want him to sleep in the swing.
Our son is now 12. I remember loving it when he was an itty bitty guy AND being totally stressed about it. During the stressed times, I was afraid I wasn't doing things "right". I kept wondering when that "mother's intuition" was going to kick in that everyone talked about. I felt pretty overwhelmed at times, especially when he needed a nap and wasn't falling asleep. I needed his nap as much as he needed it. The trick was to not let him get overtired which made it harder for him to fall asleep.
The biggest thing to remember is...this, too, will pass. If your son wakes in the middle of the night, do you pump milk so a spouse or partner can help do some night feedings to give you more sleep to better handle the day? My husband did one or two feedings at night. They would then stand by "Mr. Clock" (an old-fashioned wind-up clock) that would mesmerize our son into sleep if he wasn't asleep already from the milk.
Good luck!