Hello
@foodismedicine, welcome to the Forum. I agree there is benefit from trying the Libre 2 on a free trial. But, and I'm not remotely medically qualified to offer anything other than a suggestion, I would spend a month (at least) using a meter with test strips to get a sense of what my BG is routinely doing before trialling the 14 day CGM.
My logic is that first any CGM should be checked against some fp tests to be sure the CGM readings from interstitial bloods are close to actual BG results from fps. Using test strips and a meter does need learning a bit of technique to make that a smooth and simple process. During the 14 day CGM trial, if a CGM reading seems really wrong (high or low), then it is normal to do an fp to verify that possible rogue result. Consequently the benefit of the 14 days of CGM data could be "watered down" by needing to first faff around with learning how to get fp results.
Secondly, I think if you've got a months worth of fp readings you will have a good sense of what your CGM readings might look like. Your spot results a few times daily would make a lot more sense once seen on a CGM plot. This basic understanding could allow you to quickly focus on meals or specific foods that give you BG spikes. Or find out how exercise and activity affects your BG. Or just zone in during the 14 day trial on any peculiarities that your series of fp results have brought to your attention. From this strategy of mastering fps and having some usable data you would, in my opinion, get far more out of the results from a CGM.
You could even revert to fps for a further month after your CGM trial and then purchase a one-off 2nd sensor, using that to learn even more about BG oddities. Or even to help you while away from home and needing to gauge hotel or cafe foods. The permutations are endless with "once in a while" sensors. If you meticulously log all your sensor results, with records of meal content, a subsequent look back at those records from the web-based LibreView site could also be helpful and revealing of repeating trends.
I offer these thoughts, after 12 months from first diagnosis in Feb '20 with just fps and then receiving Libre 2 in Feb '21. It all made my new CGM results so much more revealing, because I had a fair sense of what I expected to see and could quickly adjust my lifestyle to counter my unsatisfactory CGM readings. The daily graphs quickly allowed me to see BG changes I'd influenced AND allowed me to repeat those experiments and verify what was happening. That sort of experimenting from just fps is very drawn out!
Most of all I knew what to expect from CGM results.