First, count the number of days you will be travelling and then decide what you gonna wear on each day and take one pair for the change in the night. Take 1-2 shoes/slipper that gonna suit almost all your attire. And then meds and toiletries. Voila! Decision is yours.
There are some tips for travelling light
Pack clothes in a compression cube Use straw bags to pack shoes, beauty items Carry a light weight sarong in place of towel, avoid carrying laundry items, avoid packing thick shoes instead wear them. You get toiletries in any place you travel to, so you can avoid packing them, instead carry basic toiletries you need like spray, lotion.