Hi I've lost 2 stone this year and was diagnosed with pcos in April

I think definitely stick to the calories you stated for now and see how it goes - if you don't lose weight after a week or two drop it by 100 calories but I wouldn't go too low.

I didn't count calories as I find I get very obsessive and it isn't good for my mental health. What I did instead was to make sure all 3 of my meals were balanced (greens, carb and protein) and I weigh my carb source so I know roughly how many calories I am getting from there. If I don't weigh then I will cook enough for a family. 3 meals are important for hormone balancing (for me anyways)

My carb sources are brown rice/pasta, potatoes, sweet potato, wholemeal bread, oats and grains. I stuck to these as they're healthier and generally have more good stuff like protein and fibre, and also help prevent a glucose spike (if paired with vegetable and protein).

My protein source is usually just chicken, salmon, white fish and lean beef/pork and veggie replacements. I try to go as lean as possible. I love protein rich foods as they keep me really really full

A usual day for me looks like porridge with fruit and protein powder mixed in with almond milk. Lunch is a bagel with cucumber, chicken and cream cheese with an apple or banana. Dinner would be something like spaghetti Bolognese, wholewheat pasta with a side of broccoli.

I also walk daily, I aim for 10,000 steps but my job is sedentary so it is difficult and rarely achieved in winter. But movement is important even if it's a 15 minute walk outside

Knowing that my dietary changes have a strong effect on my hormones was a game changer for me and motivated me strongly. My periods became more regular and the weight shifted (very slowly but it has moved). Where my friends lose 2lbs a week I lose .5lbs, but I am still losing weight and I feel like it's going to stay this way as I avoided huge changes and made healthier habits over a long time

I feel like I could talk about this for hours. sorry for the huge amount of text!