You don’t want to be the person who overpromises and underdelivers. It’s normal to overpromise because you’re new - you want to say yes to everything. A good rule of thumb is to over-communicate with your boss when it comes to your bandwidth and workload. The more honest you are about where you are and how you’re doing, even if you feel like you’re behind, the better your boss can support you.
As you get started in your new role, Hudson recommends, “Understand what's expected of you at key milestones (1 week, 1 month, 3 months, etc.) by having conversations with your manager. This will help you avoid unrealistic expectations and to prioritize the skills you need to master first.”