This may not be the best time to come off all your meds. After I was widowed, I joined the online forum "Way Up". Here, we all found that the "six month low" was the very lowest point, when the "Widow Fog" was beginning to clear and it struck us that this was how it would be forever.
I've now been widowed for 11 years. It has been a slow journey back to what is now a "new normal". Just concentrate on getting physically better, gentle walks in the fresh air every day, quantity rather than quality, is a good way to start. There are lots of former carers here, and I know others have also found it a long journey. So be kind to yourself, and allow yourself a few special treats.
If possible, plan a holiday next year. My mum left me some money and now I can afford to go to Crete. By chance I discovered a hotel just for single people, which has just won an international award. Google "Singles in Crete" and you will find the Mistral Hotel at Maleme. It's incredibly friendly, a lovely mix of people. There are always some former carers there too.