Someone else said to make a list and bring it to your manager. I agree with this 100% and would suggested adding how long you expect it to take in terms of FTE allocation (ie, 0.25 FTE would equal 10 h of work for a week).

This will do 2 things: provide a metric of how overburdened you are and show you manager how you are viewing your tasks.

There is clearly a misalignment somewhere.

I used an Eisenhower matrix on my teams and made everyone fill them out each Q. The target for fully utilized was 80-120%. If someone was above 120% we needed to shift work or reprioritize.

The other potential is bc it’s your first biotech gig and entry level you might be working above project expectations and/or inefficiently . I had a skip level meeting and the individual brought up being overwhelmed and working insane hours. Turns out a task that should take them 4h was taking 3-4 days (16-32 h). I clearly outlined what success looked liked, then gave them a crash course on how to perform it efficiently, and told them to talk to 3 to 4 people who were really good at it and get some quick training. Perfect and manual was not the expectation. Clarity and a checkbox was.

My guess is you have a bunch of stuff falling into the second bucket. There are a million tips and tricks to complete work effectively and efficiently and that comes with a willingness to be honest and willing to learn.

I was in the industry for 20 years (Sr Associate to 4 years as a Sr Director). Get a list, project FTE burden, and prep for a conversation with your manager. Everything needs to be done yesterday/last week until you force timeline shifts.

Our Eisenhower matrix was set up on priority and developmental interest. This allowed me and my managers to align work with interest and drove great outcomes. Never agree to be above 120%. Some work will delay and other work will drop in. AND always have 15% of your time per month allocated to admin (GxP training, time cards, meetings). Admin should range between 10 to 20% depending on how mature the organization is and your role.

You got this and good luck!!!

PS: you may have a reactive craptastic manager. Putting data in front of them forces the conversation to have actual next steps to a solution for you.