Yeah you're not losing your grip dude, skating once to twice is week is probably more than most active skaters past the age of 25. If anything that's not even slowing down, as skating every day literally qualifies as overtraining in sports and will slow down your progression and fuck your body up. This is coming from someone who was obsessed and thought they had to skate a minimum of 3 to 10 hours every day as a teenager, because it was fun but also because I was paranoid about slowing down and losing it and I emotionally projected over skating so much, I seriously dreaded that thought, you sound like you're the same. Then I realized it was all nothing but mental blocks I was basically imposing on myself, probably due to a lack of self-confidence at the time; as soon as after my first few weeks off the board due to my first shares of adult shit I realized my tricks would stay with me, I could still find my own balance although in a busier schedule and basically I was still a skateboarder, just also more of a person. Now I'm turning 32 in a few days and still skate every day I can, we have shitty winters so my current pace has to be once or twice a week too which I'm totally fine as my body can use the time to fully recover, and I can organize my schedule to basically always go skate with fresh legs. In summers it's a lot more and whenever it's dry out I'm always tempted, but I generally listen to my body first and and watch my endurance.
Skating ten hours a day, every day over and over I could do when I was 17, now I can do it for maybe 3 days straight before my legs turn into jelly which I think is still a pretty good condition for my age and how I don't even stretch (I should). I still feel like just as much of a skateboarder, I just do other shit too and actually cherish rainy days now, they feel like a relief that no, I'm not going to once more postpone all the chores to go huck my shitty back and crumbling pair of legs around; time off is basically recovery/chill time.
I'm getting the impression that you've been going through a pretty sudden lifestyle change in general, and finding yourself essentially reconsidering your priorities in order to find ways to adapt, but because you identify with skating so much, the idea of touching skate time kind of freaks you out even though it's been feeling redundant to you lately; in tormented situations like this it's easy to forget where one stands. I'd say just enjoy your hobbies as they present themselves, skating and other stuff because well, why not? Where is the external pressure? Like others have said, just keep skating fresh to you, every session no matter how frequent should feel like an adventure and not a walk in the park. And whenever it starts feeling good to you again, cling to that moment as a reminder of why you're doing it and that the act of skating itself is an infinite source if you let it be, so it itself never is a problem - those only originate from one's personal insecurities. Here really, you're just growing.