Need help solving my problem!

Currently have 1GB of ATT fiber in our home. Works great, love it! Where I’m running into an issue is, the main area I need the strongest connection is in a detached garage/home office about 150ft off the back of our house.

Currently have 3 Eero WiFi 7 nodes, 1 connected directly to the ATT router where I have passthrough set up, 1 halfway to the back of the house, and 1 out in my garage/office.

Only getting about 185mpbs of speed out there so I definitely need a better solution. Any ideas?