I didn't specifically give up reddit completely, but I have drastically reduced my time on the site, especially since I only ever go onto it when I'm sitting at my desktop and I go to Lemmy first.
It sucks that a lot of communities aren't large enough to sustain content and have remained on Reddit. Even the larger communities tend to get stuck on the same few posts for multiple days without new things pushing them down the list (e.g. the recent LTT drama just would not leave my feed for far too long). For sorting Active is far too sticky, even Hot doesn't clear out posts fast enough.
I find that while I get votes on my comments, the amount of replies and such have definitely reduced, indicating there is less engagement going on within the comments on Lemmy to me than when everyone was moving over.