Your ticker shows you've already lost 6 pounds. Your spark page shows you've been a member since July last year. That's clearly not "too fast" in that time frame.
In what time frame did you lose the 6 pounds you've lost? If that has taken you 3 weeks or longer, then you don't have any reason to need to account for a more active job, as you're not losing it 'too quickly'.
If it was one week - I'd even say you still don't. It's quite common to lose a lot in the first week of being healthy. So I would see what your trends over a 6-8 week period are. If you are, then, losing over 2lb/week, then your job is probably more active than your calorie intake is accounting for and you need more food, but if not, then it's not making a difference.
Deb, in New Zealand