Hi.
Your main issue is difficulty in breathing which increases at night not allowing proper sleep, throat pain and dysphagia.
The breathless with low PFT is indicative of obstructive reasons and the commonest cause is allergic
bronchial asthma.
Addition of steroid that is
Budecort and
Asthalin inhaler along with oral bronchodilators like Deriphylline should help you the most.
As for GERD or so continue the PPI, add-on
Domperidone to have motility regulation, antacids to be used when you are on empty stomach.
Avoid stress and
anxiety as these two increase all your symptoms.
Avoid oily and spicy food.
Sleep in reclining position.
Avoid the allergens by identifying the instigating and enhancing factors.
Consult your Doctors regularly and go for detailed investigations as would be suggested by your Doctors.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, ENT & General Surgeon