Help😔 Im starting full IB and im very scared

So i’ve always kept a 90 average without studying, meaning i’ve always laid back and done well in classes. I decided, since I plan on getting a doctorate for psych that I would do full IB to end my long run of cushy school life and passing by easily. Do you guys have any advice for keeping afloat, learning to study, or comments on if you think I’ll survive? It’s causing me smm anxiety! I’ll add a list of my classes down here⬇️

IB English HL1 IB Psychology SL IB History HL1 IB Biology HL1 IB Theory Of Knowledge IB French SL