Users who have successfully lost weight while being medicated - how did you do it?

Hey, I don't think I've posted on this sub with this account, so I just wanted to say hello... and first of all, let me apologise if this isn't allowed on here - mods can delete it as you wish.

It's a new year, so I thought maybe I should finally put my plan on being more fit and losing some pounds into fruition. However, I'm medicated, and I'm unsure if it's actually possible to lose these excess pounds, and I have a lot of em...

To make a long story short, two months ago I had to switch my medication from paliperidone to risperidone, which is an older generation antipsychotic which I was taking in the early years of my illness. I'm also taking quetiapine each evening, some prozac in the morning and amisulpride twice a day. I also have some hydroxyzinum that I take on an ad hoc basis.

So, I wanted to ask those who are on similar types of meds, how did you lose your weight? I'm planning to cut on coffee with sugar and milk, and also will try to introduce some exercise. But, it's possible that I won't lose anything at all since I've heard stories of people with schizophrenia having struggles with losing weight on their medication. I've heard keto is pretty good, but to me that diet is too extreme and really not longterm.

Would appreciate any insights on this.

Thank you and happy new year!