Dealing with many many questions

My DS (4 and 3 months) asks a lot of questions. I know that is normal and that is a phase. He is really curious and loves learning, which is great and I don't want to stifle that. BUT.... I am finding myself easily frustrated by his constant questioning. He asks me (or any adult in hearing distance) lots and lots of questions:
what time did you wake up at?
what does *insert word* mean?
what are you doing tomorow?
what is x plus y?
what gear are you in now?
why are you...?
what does that sign mean?
etc etc...

Is it okay to say that I love his questions, but that I can't answer any more for a while? Should I just put up with it and keep answering? Can I somehow redirect his curiousity at least for a little while to have a break?

I question back as often as possible. So ask their own question back to them - makes them think more than an answer given. The old standard 'what do you think' often leads to some long and creative theories :)

I totally think it is alright to say something like I am having a rest from questions for a while but you can use you own clever brain to find your own answers.

After a long day dealing with so many questions I ask my boys for a little rest from questions, I say mummy's brain is hurting a bit from all the thinking so we're going to have a rest. That's usually when I turn ABC2 on for half an hour lol.

I think it's totally ok to ask for a break from questions :)

I'd love to say it goes away soon, but for some it just doesn't. I use 'what do you think?" a lot, as well as 'where do you think we might find an answer?' or 'who do you think we could ask?'.

I also use 'I'm not sure' heaps.

I'm not naturally a talker. My brain just can't cope with the space filled with noise. Now that she's bigger she can write them down/do her own research mostly, but DS nearly 5 can't so yes, I think it's ok to say you need a rest.

I sometimes say "what do you think?" or "You tell me?"

My anxious DD asks the same question over and over and over again. Even immediately after stating it.

I thought that answering her every question was the best thing for her but it turns out it's not the best - as it seems to feed that desire even more.

Our psychologist suggested I ask her back 'what did mummy just say' or 'what do you think'?

The more I put it back on her, the less questions I get