If you don't want another kid, don't have one. Don't feel guilty about not giving your child siblings. There's nothing wrong with that. Having loving parents is all they need.
You already paid the clinic for another round of what? Egg retrieval or FET? It’s totally up to you if you want another child or not. Depending on if you still have embryos or will have to do another Egg retrieval I would say wait with the FET, if you are not ready and consider the egg retrieval sooner than later for an eventually later FET. Either way it’s up to you 🫶
I only plan on having one kid… I don’t really think you should have more than one kid just to give your kid a sibling. I mean I get it… but you should just have as many kids as you can handle in my opinion