Welcome to the forum . . . glad you stopped by and shared your experiences with us . . .
You seem to be managing many aspects of anxiety and Lexapro appears to be working for you . . . You say that in the last 6-9 months, "this stuff" has bogged you down . . .I'm not sure what you mean by "this stuff" . . . do you think it is a reaction to the Lexapro? Perhaps, since you have been on Lexapro for 2 years, you might consider a reassessment as to the effectiveness of the drug and/or the dosage . . . my colleague had a similar issue, not with Lexapro, but after more or less two years the dosage needed to be increased . . . not by much, but it seemed to do the trick . . .so, you may want to chat with your prescribing doctor re: Lexapro and/or dosage.
If you find that the cold weather has an impact on you, it may be seasonal affective disorder which is not unusual . . . I live in Canada and when it is snowing and overcast and icy and I have to put on 50 layers of clothes and walk like a penguin, well, most days, I don't even want to get into real clothes . . . now, some folks take medicine for seasonal affective disorder . . . I usually make a deal with myself . . . if I get out of bed and do x, y, and z including eating properly and exercise (even if it means looking and walking like a penguin), then I get to do a, b, c as my reward (that is usually homemade hot chocolate as my evening snack made with the good chocolate) and, I dare say, an oatmeal cookie . . . .yep, it is a bit of a childish approach but it does get me up and moving . . . I find that once I start doing something, then I am good to continue . . . .you have the treadmill which is fantastic, but don't stop there . . . even if you have to do things in a step like fashion . . .for example, Day 1, get up and get dressed and do a, b, and c and then veg for 30 minutes then get up and do x, y, and z . . . do this for several days . . .then on Day 10 or whatever, get up and get dressed, but don't go back to the couch until it is 7 p.m. and fill your day with activities . . .anything from the treadmill to housework to going outside and walking to whatever . . . .this may help you break the attraction to your couch . . .
Do consider a visit back to discuss your meds and perhaps you might even consider volunteering on your days off to give you a reason to get up off the couch . . . . let us know how you are doing and you are not really bogged down . . .you've hit a bit of a speed bump, but with all you have accomplished in managing your symptoms, I am confident that you will succeed in putting this speed bump in the distance . . .take care, kc