Sorry to be a PW, but figured I'd ask you ladies about this, too

We swaddle DS2.. actually, we swaddled DS1, too, but around 3 months he stopped needing it.. he'd break out every single time, but then would continue staying asleep, so "stopping" wasn't an issue. DS2 on the other hand NEEDS the swaddle still. He will sleep 12-13 hours at night while swaddled. We've been trying to swaddle him with one arm out, and he's "okay" with doing that, but will wake himself up periodically from smacking himself in the face (thanks, morro reflex).. I know the morro reflex should stop by 4 months, but we're a week shy of that and it's still definitely an issue! He is becoming so heavily relied on the swaddle that I have no idea how I'm going to break it! He's swaddled at bedtime and naps.. we've tried no swaddle or just swaddling his torso leaving both arms out and both of those options were disastrous (and we've tried more than once).. when did you stop swaddling and how did you "wean" off of it?? I plan to discuss this with my Ped at his 4 month appointment, too, but just curious for tips/advice in advance

Thanks!
Loss #1: 18w5d.. D&E 04Mar03
BFP #2: Jun2011.. missed miscarriage. D&C 08Jul2011 8w4d.
BFP #3: Nov2011.. Our Rainbow Baby!!! DS Born: 15Jul2012!
BFP #4: Nov2012.. 2U1 - DS2 born 12Jul2013. BFP #5: 01Jan2014..3U3!!
My blog about raising 2U2!
Re: Swaddling? (Julymomma)
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BFP#1 3/8/12; diagnosed w/ Anencephaly at 12w6d; D&C 5/9/12
BFP#2 7/18/12; A/S 10/26/12 It's a Girl! EDD 3/29/13
Phoebe Jordan Born 3/20/13
BFP#1 11/12/11 ~ No heartbeat 12/12/11 ~ D&C 12/19/11
BFP#2 3/25/12 ~ Heartbeat 141 4/16/12 ~ No heartbeat 4/25/12 ~ D&C 04/30/12
BFP#3 7/16/12 ~ EDD 3/26/13 ~ It's a BOY ~ DOB 2/26/13