If I understand your post and my math is correct you are taking 600 to 1,200mg at the most a day. This is with in
the guidelines of
the manufacturer.
The concern would be in you were taking 1,200mg for months, 5-6 times a week. Occasionally it's ok.
The best suggestion I can give you is to discuss this with your parents and PCP. If you have a need to consistently take IB that should also be addressed. Please talk to them.
Take care and best of luck to you.