Help please

Hello, I’m fairly new to Stocks and I have a couple of questions if y’all could help me out! A few years ago I put a couple grand into Amazon, Google and Nvidia and now I have quadruple my money and I’m wondering, would it be wise to take about half out and put it back into the same stocks ,don’t touch the money or ,take the money and put it into new stocks. I’m not a bot. I’m just trying to find somebody that can help me if y’all were to be so kind. Thank you.