The easy answer IME is no, it doesn't slow down. Buckle up!
My advice is
1. forget about normal (whatever that is anyway). Most kids I seem to know have their own version. Often ahead of what the experts say, sometimes behind. Asynchronous to the extreme seems to be the common theme in my little bubble, of course YMMV.
2. follow his lead. My goal was to try to encourage a love of discovery and learning wherever my kid's passions took us (of course this would be my goal regardless of their IQ). Sometimes this meant a lot of google searches, sometimes it meant going into topics far earlier than I would have chosen (existential angst in a toddler/preschooler is fun, so is actually answering "where do babies come from, no like exactly how? show me how!" after my vague high level answers weren't enough (although I did managed to avoid the show me part....)).
3. be prepared for other parents and kids to notice and be ready for it to not necessarily bring out the best in them.
4. enjoy
