Just to let you in the UK that Superdrug have 'buy one get one half price' on their Moisturising Drops (they have different types but thes are Hypromellose). If you need something stickier to last overnight go for Viscotears.
And good news . . I have had injections extended to every 12 weeks! (Though have to keep an eye on the other eye which shows small but stable area of AMD)