you have described one of my children.
things that have helped
visual timetable daily planner- Amazon (have a look it’s self explanatory)
choices for everything - (tiring for you but may well work) for example
‘what colour are you wearing today’ when she decides ask her ‘am I choosing a blue outfit for you or shall we do it together’ either way it will hopefully help her feel more in control. Including allowing her to wear a Halloween costume in may to Tesco etc.
Meltdowns
Have a look at a sensory room in a spare room preferably but if not her bedroom or the living room if possible. Sensory swing, sensory body sock, sensory lights etc have a look on Amazon
Shoes
Take her to any and every shoe shop and let her pick any shoes. Mine went thought a phase of only wearing wellies despite the weather. Let her wear crocs in the rain etc. have a look at barefoot shoes. They are like socks.
Car seat
Get ahead of it. You know she’s going to be upset by it so day to her ‘do you want to check the car seat before we go?’ Let her sit in it and she will say her issue and agree with her. Say things like ‘ahh yes it does seem too tight/wonky, silly car seat’ and just make it look like you are adjusting it and say ‘oh try that’ and repeat
Food
Have a cupboard low down in the kitchen with tins, snacks, fruit etc and when she is hungry ask her to ‘come and have a look or shall mummy chose from YOUR cupboard’ and see how that goes. Whatever she decides tell her ‘great choice’ and let her eat whatever
Clothes at home
Does she need to have clothes on at least in the house? Mine doesn’t and it works. Mine is less stressed and I’m less stressed
Bed
Ahhhh the dreaded bedtime. Assuming you’ve tried lavender room spray, new bedding, pjs, no pjs, light dimming in the living room every 5 minutes before she goes up, white noise etc
Things to at help us… sometimes
Sleeping bag
Tonie box
iPad in bed 😬😬😬😬I know I know but when you’ve had 3 hours sleep max every night for 3 years you aren’t functioning as a parent.
Skipping the bath before bed routine that stressed mine out it was like they knew bedtime was coming so the stress started to build as soon as I started running the bath.
Masking
Sounds like she is masking well and then letting it all out at home in her safe space. Which is good really as it means she’s so safe I’m with you. Could soundproof the sensory room/living room if financially doable
Dd1
Needs time with you alone and with your DH alone. Perhaps you have dd1 on Sunday afternoon and dd2 with your husband on Sunday afternoons and switch every week. Only need to be an hour or so doing something together. Little coffee shop visit, trip to the pound shop, etc. both do the same activity just separately.
Play therapy
May well help. Perhaps she has some sort of trauma from the feeding issues so young
im assuming DD1 isn’t like this so it’s not a case of you pandering or causing the behaviour it’s something that dd2 is struggling with
You are doing amazing Op. do not kick yourself. This is a tricky situation. But you are not alone