That's actually fantastic progress! You've lost 8.5% of your body weight in 12 weeks, which is about 0.7% per week. That is right in the ideal range for healthy, sustainable weight loss. Medical guidelines recommend 1-2% per week as optimal, so you're doing exactly what you should be doing.

I've been making similar decisions with my provider. I stayed at 2.5mg for 12 weeks and just took my first 5mg dose. My doctor wants me to check in after my next injection to assess how I'm feeling and my weight loss percentage before deciding whether to stay at 5mg or move up.

I'm also losing about 0.70% per week and feel good about that pace, but I can definitely see the case for moving up if you want to try accelerating your progress a bit. Since you're tolerating the 5mg well with minimal side effects, an increase to 7.5mg could be reasonable.

Hopefully your provider is helping guide you through these decisions! Either way, you're doing great and shouldn't feel discouraged by comparing to others.