If you're being treated poorly and it's causing you stress, leave.

It's going to take time to earn trust from peers and your manager to start getting more meatier work. If you're early career, I think 2 years is a good guideline. Many places hiring someone for their second job will expect you to be leaving your first job around 2-ish years. 2 years gives you the chance to take on larger projects and see the results of your work and get feedback about things you've pushed to production.

You probably shouldn't stay at your first job more than 3 or 4 years. The second job change is the hardest. It's when you realize that different companies do and value things differently. Staying too long at your first job will make it tougher to adjust. It's also good to get exposure to new ways of working while you're still agile enough to soak it up.

If you've left more than 2 or 3 jobs within 2 years it starts to look like a red flag.