Those Chinese jets are not really fifth generation stealth fighters at all. China regularly makes claims of it being a technology marvel. Every Chinese weapon or technology developed is always riddled with faults, unreliable technology, poor metal and material composition, big radar faults and unable to detect jets at the long range they say it can do and it requires a very large radar cross section before it can detect threats, unreliable and poor performance of its missiles and bombs, major engine problems with poor metal composition and not able to provide the amount of thrust it can claim it can do and it has a low number of flight hours before the engine is finished etc.
Despite having a very low number of jets we still have a very good capability to defend. India has developed a integrated SAM defence shield which can take out jets before they can cross the border by using the ballistic missile defence shield, S400, MR-SAM, Akash, Spyder, SAMAR MK1 and MK2 and more upcoming SAM like QRSAM, Akash NG and Project Kusha which is the indigenous S400 SAM and more.
There's just so much wrong with China's weapons and technology which it never reveals as it continues to maintain its very high superiority perception over other countries. Also we do need more fighter jets and progress is being made but it's far too slow and the government should consider giving a license to several private sector companies to manufacture the jets much more quickly without the government having to open expensive new buildings and production lines whereas the private sector can use their existing facilities and workers.