Reddit reviews Oboemotions: What Every Oboe Player Needs to Know About the Body/G7367

The numbness is unusual, but it also seems unlikely that you managed to do permanent damage to your muscles in a single weekend. I second the suggestion to play for very short periods of time, several times a day. Don't go all the way until your lips are numb; stop as soon as you start feeling off, even if that means just one scale at a time or something like that.

You might also want to take this opportunity to really optimize your use of your air and embouchure. If you are pinching the reed too much, holding lots of tension in your face or shoulders, or have poor breathing habits, that will all decrease the amount of time you can comfortably play for. Talk to a private teacher about improving your embouchure, and you could even consult an Alexander Technique practicioner to sort out other inefficiencies in how you play. If you have access to a library that can order them, or even want to buy them, the books Oboemotions by Stephen Caplan and Playing Less Hurt by Janet Horvath might be helpful for you!