Topped again, weather is still hazy most of the time. I should have picked a better spot, due to lack of sunshine. Used some neam oil as preventative pest management. Took the lower dead leaves off. Stem is not very thick imo, but she is still alive and growing.
Dude, add more soil, mulch and shit around it (without necessarily like heaping soil against the stem), give it a bit extra sugars/carbs, calcium, phosphorus, vitamin E.
No jokes, it keeps the roots quite a bit warmer (like even just for water retention, other than extra insulation, which might seem counterintuitive, but aids thermal regulation), phosphorus and sugar for heat/internal energy. Calcium to "buffer" things and aid phosphorus and other uptake. Vitamin E for cold resistance.
I've grown several hundred plants through winter, sometimes as cold as -6c (still warmer than some other places).
Cheers, and good luck. I'm currently doing winter grow (germinated seeds at worst time possible, start of winter).