For persistent cough I still swear by keeping an old mustard miniature beer glass with plastic lid close to hand. Filled with half honey, half bottle Borsdruppels (Lennon's), freshly squeezed lemons to top up the glass. Stir and sip after coughing, also some water always close to hand.

Not walking as much as, normally tends to lead to swelling legs and feet a bit, perhaps that is backlash of being laid up for awhile.

Good to hear your son is with you, enjoy your Christmas with the family together.