Hmmm did I mess this up?

I’m relatively new to this GLP-1 and could really use some advice. I’m worried I may have made a mistake with the reconstitution or dosing.

I started with a 10 mg vial reconstituted with 1 mL of bac water. I eventually worked up to 4 mg and felt amazing - food noise was basically gone and i felt super focused

I then switched to a 20 mg vial reconstituted with 2 mL and increased to 5 mg, drawing 50 units. My understanding is that both vials are still the same concentration at 10 mg/mL, so 50 units should equal 5 mg. Is that correct?

What’s throwing me off is that this dose feels much less powerful than the 4 mg did before. The food noise feels a little reduced but not much. If my dosing math is right, what else could be causing to the weaker experience? I can’t be plateauing already, right?