Hi
I think you need to cut yourself some slack here, you've got a not quite 4yo and a tiny baby. IIWM, I'd have your newborn in a wrap and get out and about doing stuff with DD1. She's tiny now and that's really where she wants/needs to be at this age, lots of cuddles with mum while she gets used to the world.
The things I'd work on for the moment are:
- get into a routine, get her used to EAS order, don't worry too much about timing.
- do BT around the same time (pick a time that works consistently for your family) every day with the same routine and pop her in the cot when she goes to sleep for the night. There's plenty of time for sleep training when she's a bit older and in a reliable routine
A couple of questions: Her naps seem pretty short most of the time and she seems to have a long crying spell in the evening (maybe witching hour) - do you think she's in any discomfort? Can you expand on why the change to bottles?