How Long H4 can stay in US even H1B I797A is approaved

I got a situation where my H1B-I797A is approved till 2025 on end Feb 2020 but failed to apply for H4 in time and was expired on Feb 10th 2022. its now two months. How long H4 can stay in US and what is the suggestion for corrective action?

Contact a lawyer immediately and apply for H4 extension of status using NPT.

Sure Kalpesh thank you!