Jen,
High filter pressure is not normally due to the pump being 'too strong', but rather a restriction in the flow of water back to the pool.
In most cases this is due to a dirty filter..
If you have not cleaned, or backwashed, your filter recently, then do it now..
Keep in mind that algae, can clog a filter is a day or less... So if the problem quickly returns, then I would suspect algae..
How are you currently sanitizing your pool water?? Chlorine tablets, Liquid Chlorine, or some other method??
Thanks,
Jim R.