It's the same story every year. For about a month, I can ski hard and then recover in a day or two of post-exercise fatigue. Then it gets gradually worse turning into multi-day post-exertional struggle for the rest of the season. If I continue to push, I end up with multi-month struggle after the season. (See 2020 and 2021 analysis).
After the skiing #9 on 2/3, I crapped out totally and struggled for 2 days. And #9 was for only one session of 8 runs. (Granted, it was hard off-piste skiing on black slopes). Doing that twice a week means that I'm now constantly struggling. That's just not sustainable; I'll have to quit skiing so frequently. I may do a few more skiing -- the season still has left 2 months left in it --, but no more of the bi-weekly skiing that is too disruptive to normal living.
All this means is that I may not have made as much progress after the second cross-country trip as I would like to have. As far as skiing is concerned, at least. But I've been skiing a lot more frequently, at half the amount. And I've been mostly on off-piste black runs that are much harder. So, it's an apple to orange comparison. I'll have to go back to weekly skiing to make the comparison more valid. I'll give it a rest for a week, and then try a few weekly skiing and then compare. Then I'll call it a season.