Welcome to the forum and good luck with your move back home
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One question: are you currently working in the US?
If so, and you've earned at least £18,600 in the previous 12 months, plus you have a job offer in the UK paying more than £18,600, you could apply for a spousal visa for your wife before you move and then you wouldn't need to spend 6 months apart.
There are a couple of differents ways to qualify for the financial requirement for a spousal visa if you are moving back home:
1) You have held a UK job, paying at least £18,600, for at least 6 months before applying for a visa
or
2)
a) You have a guaranteed UK job offer, paying at least £18,600 and starting within 3 months of moving home
AND
b) You have earned at least £18,600 in the US in the previous 12 months before applying
If 2) applies, you could apply for the visa for your wife before starting the job and then you could move together and wouldn't have to be apart for 6 months.