Ditch the sleeping bag and clothes stuff sacks and switch to trash compactor bag
Ditch shelter stuff sack and store tent at bottom of pack outside trash compactor bag.
I assume u can leave the inner bug net at home when not needed, but can u remove the shelter's floor and replace with window film ground sheet?
Switch sleeping pad to a neo air of some flavor
Leave the wind shirt at home and keep what u have or even swap that to a driducks jacket.
Leave the cup at home and change all your bladders in for a 2l platypus you can hang the add drink hose and splice in a sawyer inline filter, leave the squeeze at home.
Leave the bug repellant and sunscreen at home and keep your hat and wear long sleeve synthetic top and bottom. Hat, top, bottom soaked in permethrin.
Sway camp towel for generic bandana. Can wear it on you head, blow your nose, wash yourself, etc. mine is attached to front pack strap for easy access.