Hey fit /g/ here. About 3 weeks ago, I came to you all for

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Hey fit /g/ here.

About 3 weeks ago, I came to you all for help. I was at 284, 6'4''. I am down to 270. The problem is I can not run on the road for more then 2 miles at a time, and after a day or more by knees and backs start to hurt very badly. I got a gym membership the other day and have have gone 2 times. I have and can hop on a elliptical for an hour at a time. The screen says I am burning 750ish calories for the hour that I'm on it. If i start doing the elliptical every morning before work and go after work to start lifting, will I lose weight faster? I'm not trying to change my diet from the 700-800 intake a day with about 1 or more gallons of water

https://www.muscleandstrength.com/workouts/24-doug---s-5-day-high-definition-routine.html

Is this plan a good started?

tl;dr
>Running hurts, I'm fat, doing elliptical more, is lifting as well going to help not make me fat.