yeah that seems to be the issue around, with 2 i had 0 problem
for mom have dropped thought and ideas in this post
https://f95zone.to/threads/straitened-times-v0-42-0-hrelease.52690/post-11922375
as both goes would say it starts when they sleep with you and single bed (never had any other)
just focus on them, do all events that you can during day and night and make sure they are your roomate
also most important thing in this game make sure that opinion = 100 and conflict close to 0
also dont try to push the progress as you do condom sex - > you see raw (for which she aint for it), keep doing condom till mc says enough, same for raw -> creampie
you got variables for every scene in that post, so you can keep on rolling every scene till you progress.
also yeah forgot about this one, mini guide which is nice to get you started
https://f95zone.to/threads/straitened-times-v0-42-0-hrelease.52690/post-11253908