Enter everything for the 8829 in the Business Use of Home and be sure to link it to your schedule C.
Enter all depreciation with link to 10=Business Use of Home. Enter the House with method 87 and the land with method 99.
This should create your 8829 and carry it to Schedule C.
Confusing, convoluted and difficult to set up, but it works. Next year the set up will be there and it will be much easier.