What are you worried about?
If it's the side effects, in my experience psychiatrists have never told me the full range and it is absolutely in your best interests to research them. Some meds have really serious side effects that I wish I had known before I blindly started a med or accepted an increased dose. However, the risks may also be acceptable to you - it's your choice to go along with the prescription or not.
If it's whether your motivation for CTBing will stay, then it sounds like you may already be on the fence if you're considering going with the upped dose. Deep reflection might be useful here to understand what you really want. For yes/no questions, my mother taught me a trick: flip a coin, heads is yes and tails is no. Catch the coin in the air and don't look at it - you'll know which side you wanted it to land on. Again, only you can answer this question.