Thanks for your responses and welcomes everyone!
Apparently anything that has a flavour other than bitter can trigger insulin response, even if there's no sugar in it - our brain tastes the flavour and thinks food is coming. I found this video very informative as to why:
I don't want to come on here though and be an IF zealot - if herbal teas work for people, then that's great, everyone is different!
I've had a bit of a lie in today, so i think 14:10 should be doable even with the cold. Had my green tea today, need to drink some more water, and will head out for a walk. I've overnight oats waiting for me when I get back.
SW is 72.5 kg. My heaviest this year (and all time) was 74+, and I did get down to low 71s by June. However, I lack consistency, and over the years weight just keeps creeping up, so I want to do something more decisive about it!
GW is 55-57 kg, but will reassess once I get there!