Google GCP admin cert or Coursera Google Project Management cert?

I have to decide between one of these courses for work to get this year. Our workload increases in the summer though. Overall, I think the GCP cert would help my career more, but is it still possible to pass this cert within 6 months? We get 4 - 7 projects at the same time around summer time, so idk if it'd be possible to do the GCP in 1 year with that many projects. My other choice is the Coursera Google Project Management course. I've mainly worked in system/cloud administration. So, although this cert may be easier, idk if it would help me in the long run or if I switched jobs. I work in a google cloud admin/migrations role,so I feel like the GCP would be more applicable, but idk if it's possible with the workload. Which cert would you recommend I take of the 2?