I have been DCA’ing blindly in VOO and QQQ in my Roth ever since this year started. Is there a word of caution you’d like to give?

Hello!

I'm 27 and started contributing to Roth in 2021. I know I'm late but couldn't really start earlier. Anyway, I don't think I can pick individual stocks so I've been just continuously buying VOO and QQQ (50-50) in my Roth. More when it dips. I plan to keep doing the same for year 2022 as well.

Is there something I need to worry about here or just keep doing what I'm doing?

Thank you!

Edit: Another thing I'd wanna ask, is QQQ a risky index? I see a lot of mixed reactions about it on this sub.