^ Well, there are a lot of different ways to do this, so you'll get that.
To put your workout into context, you're doing roughly 4min total of training, excluding warm up and cool down. HIIT is good, and from what I understand it's the preferred method of training for someone with PCOS, but you aren't going to burn a lot of calories at that rate. Including warm up and cool down, you're probably not burning more than 100kcal/workout (and the intervals probably aren't burning more than 50kcal). That's better than nothing, but you're not going to see a lot of magic at that rate, either.
I'd like to see you doing a circuit with more exercises in it: squats, incline push ups (the higher the incline, the easier they are, so these are scalable to whatever level you're at), some form of row (you could use conventional equipment like dumbbells, kettlebells or resistance bands; if you have a sturdy railing you could do inverted body weight rows (like incline push ups, except pulling yourself up rather than pushing yourself up); or you could use less conventional equipment like sandbags or a backpack with books in it), step ups, incline plank (like an incline push up, but as a static hold -- good ab exercise), glute bridges, then go for a quick walk before the next round. 40 seconds for each exercise, then walk for 2 minutes (active recovery = less lactic acid and more calories being burnt, even if only marginally; drink water while you walk), then repeat. Start with 3 rounds, progress by adding more rounds over time and gradually making the exercises harder. Now instead of doing 4 minutes total, you're doing 4 minute per round, for 3+ rounds, so 12min or more intense exercise. Including 2min between rounds and 5min warming up/cooling down, that's coming up to half an hour of exercise, and you're looking at burning closer to 200-300kcal. That's looking a bit more optimistic as far as results go.
All that being said, the more improvements you can make on your diet, the better.