Losing weight to better our chances....

I am severely overweight at 225 lbs and I’m only 4’10. Depression and pcos took over my life but today that ends. I am going to try to lose 100 lbs to help better my chances of conceiving (trying for 4 years). But also to be healthier and live a better lifestyle. If that doesn’t work, then I will attempt to see a fertility doctor. Does anyone with pcos have any tips on conceiving?? Have you tried losing weight and that increased your chances?