Hello!
I registered as a pharmacist aftre passing the pre-reg exam in June, so its all fairly recent to me. It sounds like they may still be settling in. Pre-reg is a shock to the system. The thing i found the hardest was adapting from going from "student" timetable to full time work. You find your free time disappears and coupled with that you're tired out in the little free time you do have left. Over time though you get used to it and the bits which are difficult and cause stress become the norm.
the best advice available is just to give it time. As for gearing up for the exam, its still a long way off yet. Lots of people advise to practice calculations which i'd agree with. Familiarising yourself with the layout of the BNF, MEP and Drug tariff as early as possible is also advised so that when you're studying them more intensly later on, you know which bits to focus on.
Keep us updated with if things get better or if you want any more advice
