3 month travel..nervous

Headed to London, Edinburgh, Glasgow, Belfast, back to London, Reykjavik, Paris, Belgium, back to Paris then Cantabria Spain and Naples Italy. I'm traveling alone with my 2.5 yr old starting Oct 1. Just kind of nervous. I'm a veteran and prior LE so I know how to keep my head on a swivel but just any positive notes of single mom traveling y'all wanna give. Is this a fairly safe itinerary? Obviously not traveling at night whatsoever except in Iceland. Just seeing museums and zoos or aquariums. Maybe a few Christmas markets.