bhai jan , hope u alreday have car shampoo? if not than get mother california wash and wax shampoo, use it with double bucket method , dry with microfiber cloth
mother step 3 is good natural wax but being ur ride skin lighter colour i.e silver i would propose you 3m performance finish wax ( its in liqued form and consume very less amount of wax ) u can get this from 3m detailing center in dha lahore near adil hospital price roughly 2k in my experince this wax having stronger/longer life than meguair's nxt
for interior try turtle ice interior protectant , its giving cleaning as well as matt looks
if u can source from abroad than meguair's ultimate paste wax , roughly $22
and for interior meguairs ultimate protectant roughly $12 to 13
well u have mashallha just new car i propose u get sealant treated from usman bhai as he did one of ur ex ride
sealants give stronger/ longer protection to car skin.
always use car shampoos for wash, only microfibers ( recently i get few microfibers from 3m detailing center @rs400 each) they are far better than what locally chinese made microfiber ), never dry dusting to car skin as it create swirls.
for tyers use armorall tyer foam easily avilable at metro, hyperstar etc