Breastfeeding 10 month old - letdown much slower?

[Moonshine160]

DS2 has just turned 10 months old and my letdown is much slower than what it used to be! My letdown used to happen within about 5 seconds of him latching on and now it can take a couple of minutes which is making baby really agitated and angry, pulling off and on until the letdown comes. Sometimes he gives up completely and unlatches then both boobs will start spraying milk. My breasts still feel quite full and the opposite boob to what he’s feeding from still leaks a lot of milk during letdown so I don’t feel like my supply has dramatically dipped or anything, it’s just that letdown feels like it’s taking forever compared to what it used to and DS doesn’t seem happy about it! He feeds less often than he used to since solids are increasing but he still nurses about 4 times during the day and twice overnight too. He has always been a snacky but efficient feeder. Is this all normal or could there be a problem?

I could be wrong but I think it's normal. I had this with my 11 month old a few weeks ago. I really focused on feeding in a quiet corner of the house and just after a sleep when possible so a bit more relaxed.
It's now still slower than it used to be but he seems to have gotten used to it and doesn't fuss so much. Also noticed expressing takes a bit longer to get going but I still get the same amount.