I think at 7 weeks, if you can keep a general EAS order to things and get night and maybe one nap in the cot you're doing totally fine. So IIWM, I'd feed her then spend A time getting the pair of them into the car and then drive wherever and let her nap in the car. Does she keep sleeping once you stop driving? You can't stay inside all day with LO1!
Its pretty loose at this age - something like this (shift of course, if you WU earlier, etc.):
7 - WU, eat
8 - nap
10 - eat
11 - nap
1 - eat
2 - nap
4 - eat
5 - nap
6:30 - eat
7:30 BT