From my point of view lowering the social distancing to 1m will make no difference to the R number. I have quite a lot of friends of all ages and no of no one (apart from one family who are shielding so not going out) who is actually sticking to this. We are not hugging and kissing but we are standing pretty close. It's the same with everyone at my work - we wash hands regularly and don't sit too close, but often stand close together.
We did in the beginning of lockdown until probably the end of May/beginning of June.
YABU - I am sticking to 2m
YANBU - I am not sticking to 2m