8 months old not able to sleep properly.

My 8 month old is teething again i can see canine errupted also other 3 teethline next to right side canine, he doesn't sleep properly, gets up frequently at night and asks for feed wants me to be besides him always. he is playful during the day started miltary Crawl , any tips to give me good night sleep which is now less than 5 hrs. During the day he sleeps overall for 4 hrs 45 mins nap at different intervals. his weight gain is also slow , i had gestational diabetes his birth wt was 4 kg and right now he is 8 kgs and 74 cms in height. before his teeth problem he used to sleep for 6/7 hrs at night. Please guide here, his rest all milestones are fine very active, playful , i feed him solids and bf alternatively at gap of 2.5 to 3 hrs , he eats 1 cup of food at each meal