Frustrated with lack of naps.

My LO sleeps from around 8pm-730/8am. This is alot i know and has been doing so since 11 weeks. However the lack of sleep during the day is killing me, especially trying to get stuff done, she only has 30 mins at 11am and sometimes only 30 mins around 3pm, is this enough? I struggle to ger her down in her cot she wakes up and tries to skip it. She will fall asleep on me but as soon as i try to move an inch she wakes up! Today has been trying 😪