My personal test-day for the end of Summer - the first day after August I have to put the heating on first thing. Soon it’ll be setting the timer again. Fucking hate winter.
I’ve got single paned windows. I put that plastic storm shield plastic sheet across them. Keeps the condensation down to miniscule levels.
Just look for window insulation kit. It’s just plastic sheeting that you put on your window frame, stuck in place with double sided tape. You then get a hair dryer to tighten the plastic, so it holds tout. This process gives you an air gap between the window and your rooms warm air, so often cuts out condensation.
I use it every year, it makes a huge difference for me in wiping down windows alone in the morning and it’s deffo warmer sitting next to the window too.