i think you depend on social media alot . extraction of 4 premolars is the treatment done before ortho for decades. definitely after exrtraction it takes time to heal
for proper correction of protruded teeth , extractions are required and since you already got upper removed , dont worry and go ahead with lower extractions
Next Steps
show to treating dentist and tell him/her that you have difficulties after tooth removal . he/she will treat you accordingly
Health Tips
rinse with warm saline , 3-4 times per day