Umbrel stopped syncing after working for several months

My umbrel setup was fine and everything worked for a while. I put some initial money in the bitcoin wallet in order to open a lightning channel. I was on the road this summer and when I returned home and checked my umbrel it says it hasn’t updated blocks in 2 months (98% synced now instead of 100%). What should I do? I read somewhere about reflashing the sd card, but want to make sure that doesn’t make my btc in the wallet disappear (I have the 24 word backup in case). Is that what I should do? Any other steps? Should I just restart it, etc.?