If you subscribe to the Dollar Cost Averaging theory, you should continue buying even at the peak and investing the same amount as usual. There's a chart by Blockchain center called the Bitcoin Rainbow chart. It's interesting that even when prices reached "It's a bubble territory" it eventually ends up as cheap by the next year. Personally, I think it's still a good time to be investing, but I would not say it's a good time to take your life savings and dumping into Bitcoin.

Slow and steady wins the race.

If you're interested in hearing more about the tools I use to make my conclusions you can find that here.
https://www.youtube.com/watch?v=jxrFy1LWxME