Avalon 2006 xls headlight low beam height adjustment

I replaced my low beam Halogen bulbs with new LED bulbs. After replacement I noticed that my low beams are pointing too high. I am trying to understand what may cause this issue. Here are list of suspicions that I have:

1. Bulbs are pointing in opposite direction (possible fix: rotate/flip to 180 degrees)
2. While replacing the bulbs, configuration had changed and I need to readjust the height

Second case is pretty easy, since I found another topic on this website regarding to making adjustments.

But in first case, I might need to disassemble front of my car (take out bumper and shields) to get my bulbs out.

My question is how can I check/understand/recognize which one is the case and what would be the easy fix?

Regards,
Serik