15month old sleeps for 8hrs only

[BeCyanGuide]

Hello. My 15month old, who has been doing this for months, and always been a bad sleeper wakes at 4-5am every day. We have tried earlier or later bedtime still just sleeps for 8hrs regardless. His naps are 9-10am and 2-3pm bedtime is take up at 7.30 falls asleep by 8pm. He always seems tired, wakes up from naps crying but wont go back to sleep wakes from night time crying but also wont go back to sleep. Does anyone have any suggestions please? Thank you.

try a 10 min buggy nap in the morning to tide them over to a 1 hour lunch nap. This really helped us with the transition. 2 hours of naps is too much for some toddlers, and 10-11 hours overnight is average