What can i do about persisting ent problems/post-tonsillitis symptoms?

Heal the tonsils: If you mean that the throat remains sore/uncomfortable after treatment of tonsillitis, that is because the tonsils still are enlarged and contain some bacteria that your own immune system is "fighting." Pulsatile massage directs a flow to the tonsils. This pulsation "crowbars" out the material in the crypts. The massage reduces swelling "stale" lymphatics and puts in fresh circulation.

See ENT doc: See an ENT doc. If you have already, go back for another visit. If no satisfaction, get a second opinion.