I wouldn't look at a single quarter, engagements and applications will not be uniform, like decembers numbers are 500-700 which will result in a lower quarter than summer for instance. If you average over the year, we have about 900/week which is higher than I thought but also lower than yours.
RFEs do seem to be increasing, there used be a lot fewer. I imagine it may be a mix of all the new staff being unsure and also I've seen a lot of people getting them for proving they met in last 2yrs. I think there were quite a few apps who thought COVID travel restrictions meant they could ignore the 2yr rule. RFE seems to be sitting at about 15% on ave right now but is trending upwards.