Hello,
It is hard and it sounds like you are doing really well- keep going it will get easier
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In the meantime..... I would have some set occasions (if you don't already) when you can give DS1 attention and the baby will fit in. It's amazing how they will when they have to!-
I know it's hard when they are crying but if you have been through the checklist- hungry/tired/ill etc etc then you've done all you can and sometimes just getting on with things and taking it in your stride is the best that you can do.
Personally I would forget the "trying" to get baby to sleep- they will sleep when they're tired and out in the buggy/in the sling is probably easiest at this age. I would try a few different environments and you might find this perks everyone up. Do you get out to the library/to friends/to playgroup together?
The crying could be from reflux if not anything else? A lot of the crying (loud or not!) does just disappear with age- and I very much think it is a personality thing of different babies- there are some chilled out babies and there are some less than chilled! Hopefully your less than chilled baby will turn into an easy toddler - reverse happens with a lot of people!
Don't worry about the T.V.- as long as it's not on all the time it's fine and probably helpful! All my friends who had 2 about 2-3 years apart all moaned "there's far too much T.V. on in this house"- myself included. It was also worse when the older ones gave up their naps- I was lucky my older one kept napping until 3 and 2 months but not all were!
Personally I binned the books second time round as I found they took away my confidence rather than gave me it- also BF (I BF exclusively until 6 mths and carried on with solids until 18) is hard and I don't think some of the books really understand the whole BF relationship which is very personal to each pair of Mum and baby.
Good luck!