Slow process, but seeing results.

I was at 299 at the beginning of the year and finally got approved to start with .25mg on 1/25/25. I stayed on .25mg for two months cause the first month i had stomach issues. I lost like 12lbs the first month then put a little back on then lost some more. Started .5mg on March 22nd and have only lost 2lbs since then putting me at 284.5lbs this morning. Has anyone else had this slow of a start? Do I need to add in more cardio and weights? Should I expect to see more lbs drop when i get to the next dose next weekend? I will say clothes do fit much better and less knee pain, the scale just isn't showing much progress.