I'm three months into a fully-funded PhD programme, following on from an integrated Masters and two years in industry. I should also say upfront that after seeing more what academic research is around, I feel lukewarm at most about academia in general - which definitely contributes to any dissatisfaction I feel.
While I'm broadly interested in the subject matter of my advisor's field (I switched to work with him after my Masters), I don't feel too keen on exploring the exact research directions he pointed me towards. That being said I still haven't clarified to myself what my dream research question would be. I know what themes I'm interested in, but even though they reside in the same general field as my advisor's work, they don't match his desired themes (It's like we are both interested in cooking but I'm a vegetarian and he is keen on catering for this new hot bbq rib joint.)
So on one hand I have an advisor urging me to jump into this idea I'm not interested in, and putting pressure to find a conference to publish anything ASAP (because the idea involves a recently hot buzzword). On the other hand I'm three months into this and I still don't know what it is that I would like to research really and I'm questioning whether doing a PhD makes sense at all. Both of this sides of the problem are incredibly stressful and exert really negative effect on my mental health.
Is it abnormal / bad / embarrassing to still not know one's research question this far into the PhD programme? Would it be bad / embarrassing / disrespectful to turn down my advisor's idea even though I don't have my own to offer in exchange, and ask for more time for 'reading around'?