Two hours every night

My son 2years and a half takes up to TWO hours to get to sleep every night and I’m so sick and tired of ending up as a crappy, moan stressed mum that loses patience with him every single night.

He currently has one nap during the day. He wakes at 6am most mornings. By 11am he is more than ready for a nap and falls asleep within minutes! If I let him he will nap for two hours. I usually let him nap from 11/12 and no later than 1/2pm.

Bedtime depends on the time he wakes from nap. If he wakes at 1ish I will start bedtime routine at 6:30 and by 7:20 I’ll have him lay down and big lights out. Then it is taking up to two hours for him to fall asleep. He will giggle, kick legs around, try play, want more cuddles, kisses etc. I get so stressed out and end up shouting most nights (feel like a real shit mum).

I’ve tried dropping his nap (was hell and he was up most of the night -I guess due to being over tired). I tried pushing his bedtime later and sooner but nothing changes. I’ve only let him have an hour nap (crappy mood until bedtime) but still 2hours to fall asleep.

Please I need help!

Note I lay with him until he falls asleep, rubbing his back. I do this because up until a month ago he was breastfed asleep (managed to stop breastfeeding). We also co sleep. But I really need me time which is when he goes to bed. This two hours started a couple weeks ago.

I have no one else to help I’m on my own day and night so desperately need my time back some nights it takes so long I end up falling asleep with him!! Or don’t get to leave the room till nearly 10pm help

Edit: thanks for responding. I have tried leaving and he screams blue murder as soon as I get to the door. He gets so upset and what looks like anxious. He will sob and run after me screaming mummy no mummy stay I’ll go to sleep now! Which breaks my heart cos me trying to leave he seems to think it’s a punishment (probably my fault by saying many times if you don’t go sleep now I’m going). Gosh I feel like such a crap mum right now.