There are many chair exercises you can do free on YouTube. Hope that helps a bit. Choose your foods for nutrition, and keep in mind that if you're normally quite active, you won't be burning near the same when you aren't. Exercising with weights, even cans of veggies for hand weights will help with toning, and make you feel like you are doing something positive. You've got this. It'll be a big change in your routine, but nothing you can't navigate. ♥️