Sorry if I'm way off OP but how much does your DD nap? By the time all 3 naps my DD (6mo) needs are taken out the day there isn't a huge amount left! I find mine gets very grumpy if she's overtired.
My typical day at 5mo (before solids started):
6.45 wake, bouncing, tickles, peekaboo etc in bed with me and DP until he goes to work. Sometimes get a toy for a bit of variety, jingly ball eg
8.45 feed then nap till 10ish
10 -11 no nappy time on the playmat. 11-11.45 One of: sat in her highchair playing with wooden spoons, jam jar lids, whatever kitchen stuff looked safe! Or sat in rocker, or summer infant bumbo thing.
11.45-12.15 feed
12.15-1.45 walk in buggy to make nap.
1.45-3.45 Two of: door bouncer, highchair+household stuff, playmat, on my lap playing with toys, sitting in rocker watching me cook etc
3.45-4.45 feed then nap
4.45 read a book, sing some songs.
5.30 carry DD round while I get rooms ready for massage and bath and bedtime
5.45 bath
6 massage
6.10 feed till DD passes out!
6.45-8 settle DD repeatedly and wish she was old enough for CC
I also like to waste use time making DD's changes long and fun, after cleaning her I stroke her tummy, face, legs, feet with different things- flannel, toothbrush, cotton wool etc while talking to her about her body, or play this little piggy with her toes. She loves me repeating the same rhymes every day as I guess she feels clever when she recognises things. I can make a change take 20 minutes easily!!
By dragging things out like this the day passes very quickly and feels busy. If I don't go out for a long walk it seems a lot slower.
Sorry if that's really boring, otherwise HTH!!