Hi, welcome to OSM and thank you for adding this footpath.

It appears to be a public footpath, so if you wanted you could also add the public right of way (PRoW) tags to it, in this case:
foot=designated
designation=public_footpath
prow_ref=MR3

There's a tool to check PRoW progress here, with guidance on how to map and tag them here:
https://osm.mathmos.net/prow/progress/kent/tonbridge-malling/malling-rural/
