I felt like crap at 3.5 months and now at 8 months am definitely on the way to recovery. It never feels like you're improving, but think back a month or two ago and you will likely notice a difference. Gradually it becomes more bearable, don't lose hope.

Stress is a killer, all my periods of improvement came when I managed to remain calm, all my plateaus and downhill times when I let the stress get on top of me. So make a plan (nutrition, rest etc) then tell yourself you're doing everything you can so there's no point worrying about it.

To start thinking it will never get better and catastrophising is hard to resist, but that way lies madness as well as lots of stress hormones which are bad for the brain. Try to chill out and if you can't feel happy, try to go 'flat' (ie not feel much at all). I found that it's safer.