kitchen in south west direction is not good and advisable as per vastu.
If you can't keep your stove in East direction, second option is to keep your stove in west facing in NW side of the kitchen.
Actual place of the kitchen is South East so in South East room (the actual place of kitchen) keep a stool and cook something daily, such as, boil rice, make tea etc. This will create an additional kitchen at correct location.
You can also paint kitchen with yellow color.
use minimum water within kitchen. Try to wash utensils etc. outside kitchen.