If they are making you feel like that than it may not be the right fit. If it is just you feeling like that then tell him/her. If you feel like you can't tell them than it may not be the right fit.

P.s. You are never a burden to your Pdoc. It's their job. It's like saying you're a burden to the doc because you're thyroid crapped out and they need to treat you. Bipolar is real. You need treatment. That's the Pdocs job. If they didn't want to deal with this stuff they should have gone to dentist school instead.