I have two pumping sessions left (one is a power pumping session) today but I've been producing…

I have two pumping sessions left (one is a power pumping session) today but I've been producing about two ounces/session less than normal😞 advice/tips? I have been taking some mucinex and sudafed and I'm on amoxicillin for a sinus and ear infection. The LC said mucinex was fine in moderation (I've taken it twice over 3 days and sudafed probably once a day for three days), but I just hope this isn't permanent! Any advice/tips?