Totally doable.

When our kids were about 8 and 10, we used this little scavenger hunt book on our trip to Paris. It added a bit of fun (and engagement) for them.

https://www.amazon.com/Mission-Paris-Scavenger-Adventure-Travel/dp/0989226743/ref=sr_1_1?crid=5FI74RFU88MA&keywords=paris+treasure+hunt+book&qid=1707591246&sprefix=paris+treasure+hunt+book%2Caps%2C143&sr=8-1

From the description:

"Mission Paris takes your young travelers through the famous sights of Paris, engaging them in an exciting scavenger hunt as you explore city landmarks together.

"Say 'au revoir' to a trip filled with the stress of keeping everyone entertained. Instead, say 'bonjour!' to a memorable family vacation. Imagine - your kids will be excited to sightsee (yes, even at museums!) as you discover the wonders of Paris as a family."

We also skipped the long museums and hit stuff we could do in an hour to 90 minutes (Picasso, Rodin).

100% doable. Just set your expectations. You shouldn't plan to spend hours at the Louvre or racing from thing to thing. Enjoy the food, playing in parks and find things to see. You'll lock into reservations at a few places (Eiffel Tower, Saint Chapelle, etc) but leave lots of time to take a break and explore. If you aren't used to travelling like that, you may initially think you're wasting a trip. That's not the case. Its just a different trip. And it'll be a surprise how much they show you.

Also, the first night is hard when you land. Take it easy and have low expectations but wear them out so they crash. Go easy the first morning.

Do some research on "best croissant" "oldest pastry shop" "giant meringues" etc and make finding those an adventure. When your kids turn the corner and see the window of Richard Bertrand, get a cup of hot chocolate at Angelina, or see the Eiffel tower sparkle at night, you'll be glad you are there with them.

Plus you've got family there so you can get a date night. In Paris. Boom. Another kid.