Ed after starting going to gym

33M overweight I have little intercourse experience, mostly self pleasure. Recently I decided to start going to gym every day since 3 weeks ( 30 min cardio : incline treadmill 8.5% and 15-25 minutes of strength exercises), I building more stamina as I notice I am comfortable now with that routine and no more struggle to finish those 30 minutes of Cardio.

I also change my eating habit to more healthy one: more protein, and less carbs( I still eat good amounts tho)

On the third week I noticed issues with getting hard and I am freaking out. No more morning wood and ED when watching. Normally what I am doing as a life style change would help me be better not this!