Nap schedule & huckleberry

I'm absolutely no expert but am also following wake windows/sweet spots with pretty good success which are 1.5/1.45/1.45/2/2-2.5. Naps seem to be getting longer over the past couple of days (she's 20 weeks today) but I darent speak too soon! We are just gonna stick to wake windows even though that means a slightly different bed time and wake time each day. Hopefully she'll become more consistent over time. We've been on 4 naps for ages. Wake up 6-7 and usually in bed by 6-7

I feel like this about the huckleberry suggested nap times, the sweet spot seems to work a treat as my little one does go down relatively easily for a nap if I follow the suggested wake windows. Like you we don’t end up with a very long nap (unless it is a contact nap)
Sometimes when I think she could definitely do with a longer nap I try to be close enough to her when she starts to wake up from her independent sleep to quickly scoop her up and have a contact nap afterwards. This does seem to put us on a better schedule heading towards bedtime. Also a win win, some time to get things done and some cuddles!
I would also say that a lot of days I try not to be tooo strict about it, if I did I would never leave the house and in those situations I try to follow her cues where possible.

I do this for a longer nap. Pick him up and second half of nap he does on me and he’ll then nap 1.5-2 hours

my baby only contact naps and still is waking up after 35 mins these days. Longer naps are usually in the pram when we are out.
I will cross check my sweet spots against yours because recently I have been following my baby cues and put him to sleep earlier than sweet spot advice x

As soon as it hits 30 mins I stand by his cot gently rocking it as he will startle and wake himself up and usually he will go straight back to sleep and I can get another half hour or hour!