Home insemination - DH works away

Hi ladies
​Ok so rolling on to month 23...and going down the locooooo route!!
​Hubby is away in fertile period but has anyone done home insem before and realistically can sperm survive in refrigerator for a period..
​It sounds crazy I know but after this time you would try absolutely anything! Literally feel like giving up on life full stop if this doesn't work out :-(