Morning Jules
I know folk on Metformin and Glimepiride who drink regularly and are fine with it. I was fine with it.
I was fortunate that my work allowed me a month off to get myself sorted out, I used the Libra 2 sensors that give you realtime blood glucose readings direct to your phone, I used them for a few months. You can monitor which foods cause spikes and create a diary of what to avoid. They are expensive but you can get a 2 week free trial on their website. As for eating after 8pm, You can do, you just wouldn’t want to eat anything that’s going to cause the spikes, avoid Bread, pasta and rice if eating late. One of the other biggest culprits is processed foods especially frozen ready meals. Maybe have look at meal prepping that helped massively. The elevated morning level is called the morning phenomenon I sometimes still get it with levels around 7 straight after waking up. After a black coffee and walking the dog it drops.