Much of what ive read seems to suggest injecting no more than 3cc, but is there a minimum injection volume?

Sorry if this is a "dumb" question but i am new to injectables

I ask this because british dragon have parabolan at 200mg/ml, i was looking to inject about 200mg per week:
should i inject once per week OR 2 to 3 times per week at 0.5cc or 0.35cc(is this too little to be worthwhile?

Any help will be greatly appreciated, sorry if this question is a bit elementary