Does my approach make sense?

Hi everyone. Three months ago, I started investing in ETFs. Every month, I invest €150 in the exact same ETF. However, I’m not sure if this actually makes sense. The issue is that the ETF I’m investing in is constantly rising in value; as a result, the share price each month turns out to be significantly higher than it was the month before. Does it make sense to invest a fixed amount every month when the ETF is experiencing continuous growth? I’m not a professional; I’m simply investing for the