Right now you have to unequip GOTE and use porters on the necklace to recharge it. Rather be easier to right click porters in your inventory and hit add all.
/u/JagexRyan mentioned this himself: https://twitter.com/JagexRyan/status/1248954255542755328
Not sure if that's on his planning though. Maybe he can give some insight :)
I swear I saw a ninja fly by...