Backup APFS PARTITION/VOLUME which's located alongside NTFS under windows

[Rules96]

So I've searched all the internet but haven't found a reliable answer: I have 
1) My SSD with Windows from which I'm now writing this post
2) My EFI SSD where: a)EFI partition b)APFS container (partition with apple volumes inside such as preboot,recovery,system) c) NTFS volume

(b) is physically 150GB but only 110GB is occupied inside APFS 
3) MY GPT HDD where I have d) primary NTFS partition 150 GB free space
I want:
1) backup (b) to (d) as file.backup
2) remove (b) from (2) / extend NTFS partition etc use SSD for windows only
3)some time later be able to create "150GB" (or better 120GB) "unallocated space" on  (2) alongside EFI and NTFS partitions and recover my APFS partition from file.backup to "unallocated space" so that I could normally (as I do now) boot EFI->CLOVER->THAT_APFS_MACOS
How do I do that under windows os (or at least other OSes) ?