Can I put 4mo in with sibling?

[Alwaysgothiccups]

I have a 4mo baby who currently sleeps in a moses basket next to my bed.
However my bedroom gets very light very early in the summer.. this is causing my baby to wake up very early. There's no way to deal with this due to the strange shape of the window.. we did have a cardboard cutout to black it out but I can't reach it myself and my husband leaves very early for work meaning I'd either have to be in the dark or the light all day..
I mean it's not the end of the world obviously..
But often I put my baby in with middle daughter who has a high sleeper.. I put the moses basket in her room.
Baby settles back to sleep as my daughters room is very dark, blackout curtains and at back of house.
So she gets an extra few hours of sleep.
I was thinking of maybe putting my baby in there from the beginning of the night as this might help her sleep for longer.

I wonder if there's any issue with this? They say due to sids risk a 4mo should sleep in same room as parents.. but could this be a sibling?

Baby will have her own room in due course its just currently having renovations done.
For the time being do you think it's OK to put her in with her sister?

Her sister wants her there, absolutely loves the baby. And she's 6 and aware of not putting anything in baby's basket as she knows babies can easily choke or suffocate on any items so it's important never to put anything into babies moses basket or give anything to baby, without asking mummy.

Does baby not wake in the night? Surely baby would wake the child?

Can't you just put stick on blackout blinds to the window? Portable ones are cheap online

Baby should be in the same room as you till 6 months old.

It sounds like it could be ok

My fear would be the six year old trying to pick the baby up/carry it downstairs in an attempt to help/be grown up. Even the most sensible six year old can be insane sometimes. Make sure you have a monitor in there if you go ahead with this.

Personally I wouldn't.

4 month sleep regression and all that, you could end up with a very tired 6 year old on top of a tired baby.

That wouldn't be a problem as my DH gets up early for work and wakes the rest of the children up for school. They are never awake before he wakes them up.. both sleep very soundly.
Yeah six year olds can do crazy things but my daughter does seem to understand to be careful with the baby so far.. and like I said my husband would be awake in the early morning were she randomly to wake super early for once and try and carry baby... I think it's highly unlikely that would occur but if it did he would be there to stop it.

@Alwaysgothiccups I can understand your thinking, but I've known too many 'sensible' 6 year olds, who have done unexpectedly stupid things. I think it's a mistake to trust your 6 year old wouldn't do something daft.

then it's possibly 2 young lives ruined.

i would get black out blinds made to fit, it'll cost, but only money, not lives.

This. This would be main concern. Your older child needs to sleep well to be alert for school.

Yeah I think I'm going to try it out on the Friday night, and if she wakes my daughter at all then obviously that's a no go as a solution.
I just get the sense baby is waking because of the light. When I put her in her sisters room in the morning she sleeps a good few solid hours. Because the room is dark. So will try putting her in there for a whole night (I mean from midnight which is her last feed usually) and see if she stops waking at 4am.
It might just be the sleep regression as you say, but up till recently she was sleeping from midnight until 8am. Only started waking as it started to get light earlier.

Could you swap rooms with your daughter for abit?

Otherwise I'd be inclined to doss down on the floor with both of them in the room.

I wouldn't leave baby alone with 6yo, no matter how understanding she is

I was thinking of maybe sleeping in there too.. thats an option

Absolutely not. Your daughter is only 6 years old and shouldn’t be left alone with a 4 month old baby. The advice is to be in with a parent until 6 months old.

You just need to black out your window. It hardly matters if that means the room is dark all day because you can’t reach to take it down. Presumably you have a light?

That does look good!
Bit worried about it getting hot inside but I suppose if it's for the sun then it's designed not to?

Another option is to put her in the hallway outside my bedroom.. it's a large hallway and has no windows..

I could leave my bedroom door open slightly so I could still hear her.

I just worry about sids..
The reason I considered my daughters room was that she would be right by another person breathing which lowers sids risk apparently..

But I'm not going to put her in her sisters room now as people have rightly made me worried that my daughter might randomly do something daft if she woke up and put baby in danger.

I'm going to order the shade and try it out thanks