How do you get good reviews from commercial clients as a handyman?

I've been doing handyman work for small commercial jobs like office repairs and retail fixture fixes for about 5 years now, and been in the Chicago area my whole career so I know the local business crowd pretty well. Lately I've been pushing for more Google reviews after finishing jobs, but these office managers are always too busy to bother, and I end up with just a couple from the same places. I saw a thread on r/handyman where someone mentioned using a quick QR code on the invoice for reviews, but I'm not sure if that works for bigger clients. Anyone have tips for building reputation with commercial folks without seeming pushy? Also, someone in Handyman Nation group said Tommy Mello's advice on this is gold, so I watched one of his videos but it was more general.