should i up my dose

hi! i am 18f and i have been on zoloft for a few years now for anxiety. i started on 25mg and switched to 50mg after a few months and have been using that ever since. recently (the past 2 months) i have been extra anxious which wasn’t happening before, and also have been experiencing extreme brain fog. the brain fog has gotten so bad that i can’t even use my propranolol anymore because it makes me too tired. i’m not sure if this is a sign that i should up my dose, or if maybe i should switch medications altogether. i am going to schedule a meeting with my psychiatrist to talk about all of this, but my brain feeling weird definitely doesn’t help my anxiety lol. if anyone has similar experiences i would love to hear! thank you!