Bring a list. Embarrassment makes everyone forget things, including you. Not on ventilation in winter but the pattern is familiar.

Photograph everything before you open it. Ten seconds, settles most disputes.

You are not imagining it and you are not being difficult. Document it and take the document in.

Same here.

Ask for the longer appointment slot. Ten minutes is not enough for a complex history and pretending otherwise wastes both your time.

This is the correct amount of effort for a thread like this.