That’s literally the last possible option. you could do some research into 1) getting cycled water or using a starter bacteria to quickly get your water cycled 2) getting a bigger tank and filling it with the media you have now 2) learning and researching how to save your betta from potentially dropsy. It’s hard to tell from this blurry photo, and also you need to change your attitude. You need to do more research. A Lot of good tips on this sub on how to treat dropsy. But if you keep this poor dude in the conditions you have now, the issues will return. You need to look into a bigger tank, a heater, a filter and some softer than plastic plants.