Stacks wallet BTC fees

Hello, I have been trying to test the stacks transfer and I have a very annoying issue. Per the documentation “Amounts such as .0002 BTC are plenty” which I transferred to the wallet address. When I tried a transfer, I said I need delta more in BTC, which I transferred again to more than what is required, now the transaction fee goes above small delta above balance… I did many more times and every time I transferred more BTC in small amounts to more than what was required as per message, it keeps adding delta more the next time to the fee asking to add more BTC. Its so frustrating and not sure what am I doing wrong, can someone please help me understand what am I doing wrong?