@Queenofthepumpkins do pm me for more details my laryngomalacia baby is 1 now - but in the early days, it is important the hospital rule out any thing like a hole in the heart, hole in the pipe work anything else that has similar symptoms, like a vascular ring etc -
Mr Albert at the Portland ended up diagnosing as NHS referral got lost/took too long & we had a shocker with someone presuming, everyone had done more serious checks & like you kept looking at a baby working too hard to breath & pulling in - all red flags on normal babies -
So we wanted some basic checks completed (which A&E staff did think had happened) but once you have had a chest x-ray and echo of heart you can try and accept the diagnosis- we went private and Mr Albert put a thin camera down - took seconds and no sedation needed.
The breathing thing takes a while to get used to - to be honest you have to stop looking, I would keep a vest on and was told to get used to new normal - but things to look out for in these babies reflux is usually worse & keep an eye on other things like you talk about in your first post until other things ruled out.
Keep an eye on the weight gain, but never an issue for us - my babies lungs do have changes due to reflux/swallow issues possibly connected -
In this climate all of the above may not be possible as going back to A&E right now would not be advisable - if you are london/south based try Mr Albert even on video call he is an expert who may be able to reassure you.
Video post feeding, as although feeds fine, you want to check when digesting they are not working too hard.
Lots of cuddles, keep upright after feeds for at least 30 mins & in this climate & if money not a problem they do monitors that monitor oxygen via a sock type thing.