Help. Exhausted. 12 week old wont sleep through the day...

[Summerwine1]

Hi. Looking for some advice/tips please.
First time mum here... My babies going to be 12 weeks old on Thursday and since I'd say about 6/7 weeks she's always slept through the night (I know.. Amazing!) however the day time is a completely different story.

Because of lockdown my DP was home for 10 weeks but has recently returned to work and since then and being on my own.. She will not sleep through the day. Usually she will wake up in the morning, have a bottle, nappy change, new sleep suit change all fresh and then go down for 2.5 hours and wake up.. But then she won't go down for the rest of the day. If she doesn't have that 2 hr nap in the morning.. I'm in for a day of hell as she won't go down until my DP gets home and depending on his shifts sometimes it's not until 8pm at night. That's too long to be awake for, for a baby

She's a very sickly baby. Think she has silent reflux as she pukes all the time after feeds or when she's asleep in her moses basket she'll wake herself up being sick. She gets one or two burps up.. Falls asleep on my shoulder walking around, ill put her down and 5 mins later she's awake again crying. I don't know if it's colic.. Reflux.. What... I've arranged a phone call with the doctor again tomorrow as he prescribed her prescription milk to help with the sickness but she won't take it, so I've been having to add just one scoop of it in and mix it with her formula milk.. Like sneaking it in. The sickness is improving but something else is clearly giving her a pain keeping her awake... I've just today got some colic drops and she got 6 small burps up with no sick and zonked out to sleep... Dentinox I think it's called.
Has anyone been through this? Tell me it gets better. I feel like curling up in a ball and crying all day because i don't know how to help her.

You could try a thing called colief drops. You add them to the bottle of milk and it breaks down the lactose. I used it with both my boys and it does seem to help a bit. It could be nothing to do with lactose, but it won't cause any harm if it isn't.
Have you tried infacol? Or gripe water? I think you can give babies gripe water from 12 weeks, but just check to make sure first. That's sometimes quite good for wind.
I also had baby gaviscon from the doctor for my second. I think that has to be prescribed by a doctor though.
Have you tried keeping her upright after a feed?
The best way I found to get wind up, is to sit them on your knee, hold there back straight with one hand, and hold their stomach with the other, giving a gentle press from the bottom of their belly.

Wind can definitely keep babies up. If she’s fully being sick though, it’s reflux not silent reflux.
DS has the latter and he would cry after feeds, arch back etc and when holding him up after a feed, you’d hear the acid come up, he’d swallow it and cry.
If she’s not winding or napping well, overtiredness can look a lot like a physical issue; crying, waking up straight away, broken/light sleep etc.
Have you changed anything in her routine/sleep cues etc?

Where are you trying to get her to nap? Will she sleep in a sling?