bro, is the power steering pump making weird sounds? what is condition of power steering fluid, cherry red means that system is in good condition, however if it is of brownish color having burnt smell, foaming alot, then there is something wrong. maybe there is a leak and air is mixed with PS fluid, you can try take the air out by opening the PS fluid cover and turning steering end to end couple of times so let escape any air in system.
also try replacing the PS fluid, i had good experience with caltex PS fluid for over years in baleno, it has specifically mentioned on it as PS fluid so i choose it over other saying Auto Tranny fluids.
PS pump is of Asin, which is almost bulletproof.
however you can find it in junkyard, 1500-1800 per piece,
my advice is bring at least 03 pieces for testing from your trusted vendor, if Lahore you can visit shakeel autos (township), they will arrange you with that, off course with some premium amount.
also spare some time for replacement, test the pumps by driving after bleeding air properly and if it works for 2-3 hours continuously then i think it will serve you afterwards inshAllah.