H4 EAD and H1B in parallel

Hi- My 6 Year H1 B Max out date is on 10/10/2023 and I might have another month of extension, if I reclaimed my Vacation days. My company have filed my PERM on Dec 22; however, the PERM takes about 8 months’ time which is around Aug 23, which leaves only one month before my h1b max out. With that said, what are my options as a back-up plan. My spouse has a H1B with I140 approved, can he file an H4EAD for me while my PERM is in process? so that I can continue to work, will filing H4EAD affect my PERM process of H1B status, also by what time we should file H4EAD, can we have both H1 till 10/10/23 and H4EAD in parallel at the same time?. Please can you suggest?