Hi there, the problem is they don't give great tired cues at this age, often when they are yawning and eye-rubbing it's too late. And it makes sense, I can be tired at night and ready for bed, if I keep going rather than going to bed when I feel tired (before the eye-rubbing stage) I will get to the stage where I am sooo tired I am hyper and can't sleep. The only trick that has worked for me has been to put him down BEFORE I thought he was tired. So shave 5-10 mins off his A time and those are the naps he went down without a peep. But I often, very often, miss his window because that's the temperament I am working with hehe :-)
Sometimes I would try to 'assist' Finn and it made things worse, I had to leave him to it and really feel confident that it was more mantra crying and a protest cry rather than 'hey I need you'. I don't respond now to the 'I want you' cries when I know he's tired. He has to work it out. So some Spirited are actually in need of their explosion before they go to sleep. It's like they are letting out all the stimulation.
Independent play is something I don't know a lot about...and the paed keeps reminding me how important it is for him to do his own thing. I know what works for us now that he's cruising is to give him access to his toys, we have a wooden toy holder with open coloured bins and he just goes over and picks out what he wants and we have the furniture set up where he can cruise around the room pretty much. When I was trying to promote more independent play before he was mobile I would do baskets of various toys and rotate them every day. So he would not see the same toy in a 2 day period. Also our living area is open concept and so I could be in the kitchen and he in the living room and he can still hear and see me.
I know what Tracy is saying and some LO's might manage 45 mins on their own at 8 mths but Spiriteds get bored easily with one thing and need to move on to something else. So I think 45 mins is probably a bit on the high side for that temperament. I think Finn is normally good now for up to 15-20 mins before he comes looking for me or checking out to see where I am and if I am doing anything interesting.
And when Finn is hanging off my pant leg, I will pick him up, give him a cuddle and put him right back down with something new - 'here look at this ice cream scoop' etc. Just distraction really, that's all that has worked for us thus far.
Let me know how it's going.