Worried about low milk supply

[KLou111]

Hi, I have a 7+3 week old son as of today (BF).
On Saturday we had some friends come to stay for the night, so knowing we'd be out a while in the day, I fed him expressed milk except for one feed at night. It was about 24 hours (bar the one feed) he had expressed in a bottle.
He usually has one expressed bottle every day (before bed which Daddy does), and the rest I feed him.
My milk usually flows really fast to a point I use medela breast shells, and while my son is on one side, the shell almost fills on the other.
Since Sunday afternoon, the shells have literally had about 1/2oz in on every feed (usually 2+ozs) so I am worried my milk has slowed down due to me not feeding for 24 hours.
My son also doesn't seem satisfied on one breast now, so I have to switch him to the other despite my first breast not being empty.
Can someone please help me with what to do?? Is there anyway I can boost my supply??
I feel like the worst mum in the world at the moment.

Must be VERY different in France. We do not give formula before BF is established, we do constantly latch baby at the breast when he or she may want it at first as this increases milk supply.
We are also advised not to give baby any sort of bottles before 4 weeks so a good supply is established and so baby does not get 'confused'.
I however have given my little one a bottle of EBM since he was 2 weeks old and never had a problem, but this was due to my baby having tongue-tie and was advised to me by the MW at the time as she was worried about him not sucking as well as other babies, therefore not getting enough milk. I NEVER gave him formula though. He has since had his tongue sorted :)

My milk seems to be on the way up again thank goodness. My boobs are feeling fuller again (and slightly on the sore side, which they never are, which is odd, but putting it down to increased supply).

tiktok, do u call everybody wo do things differently from you crazy??;)

all info i gave was checked at the website of WHO; so what is so doubtful??? or is it not good source of info???
and did i say something different from the fact that it is needed to put baby onto breast as often as possible??

TikTok knows what she's talking about, as always.

by the way i never gave formula to my baby even though it was insisted by the midwives in hospital...

I called your idea 'crazy' - I am sure you are not crazy, ukrainianmum :) I don't call all ideas different from mine 'crazy'. Only the crazy ones

You say your idea (of assessing urination frequency and counting 12 urinations by leaving the baby's nappy off for a day and watching for urination) comes from the WHO. It does not. This is not practical for most people in the UK; it is not likely to be accurate as a way of assessing breastfeeding effectiveness, either.

I am a breastfeeding counsellor. Maybe breastfeeding counsellors in other countries ask a mother how often a baby urinates in 24 hours - but I would never ask a mother this.

KLou111 It IS very different in France. Our BF rates are poor. Theirs are abysmal.

lilham No, babies don't need formula before milk "comes in" unless there is a genuine problem. It is given for apparent problems a lot more than is actually needed (or given because proper help isn't given to BF). If that was the case there would be no humans as we've only have formula for IRO 100 years .