Serious Alprozolam question

Hey guys just had a question real quick about my alprozolam prescription. I'm prescribed for flight anxiety and I have a flight too. I usually take 1 mg about an hour and half before my flight and on my last flight broken down another 1 mg into 2 halves to take after my initial 1 mg dose because I was still anxious. Thinking about my flight tomorrow has me feeling anxious now so I was wondering if I would be safe to take up to 0.5 mg now and then worst case 2 mg tomorrow without any withdrawal the day after? I'll be flying again Sunday so possibly might take up to 2 mg on Sunday for the flight back too.