You can find Scottish Records on
https://www.scotlandspeople.gov.uk free to search, small fee to see original records.
There are 53 Hume births/baptisms listed in Berwickshire, 1750 – 1790. There are 261 with the surname Home.
However Stichill is in Roxburghshire, GENUKI below.
"STITCHEL and HUME, an united parish in the district of the Merse, on the mutual border of Roxburghshire and Berwickshire. Stitchel is in Roxburghshire, and Hume is in Berwickshire; they were united in 1640; and each contains a village of its own name. The united parish is bounded by Gordon, Greenlaw, Eccles, Ednam, Nenthorn, and Earlston. Its length from north to south is between 5 and 6 miles; and its breadth is between 3 and 4 miles."
Colin