My cumulative GPA is trending downwards. How will colleges see this?

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An admissions counselor at a presentation I went to at University of Utah said colleges see downward trends as a bad sign. Probably the amount the weight they place on grade trends depends on the college. Can you bring your grades up again?

Also, maybe you took harder classes recently than you did before and that’s why your grades have been trending downward?

Well here’s my downward trend
Freshman year: 4.0
Sophomore year: : 3.8
Junior Year: 3.5

I started taking all IB classes sophomore year.
If I get straight A’s my first semester of senior year, my cum GPA will balance out to a 3.8 UW, but right now it’s a 3.77