I was in your case with 45 hours flying hours.
as they say you're not supposed to be able to fly a jet, simply handle it whilst taking information.
You need to focus on your panel and listen to the instructor meanwhile.
Regarding the trim, be very gentle with your thumb you're flying a 55 tonnes and 1 more degres pitch can be a desastre.
It's all about flying a massive aircraft where every smal correction has its effect.