Hello. Your baby weight is less for his age ideally but if he is active and playful, it's nothing to worry. At the same time, get him physically examined once as a health screening to make sure that his physical examinations are all normal. He should take 3 proper meals and 3 snacks in between. Mobiles and TV or any other gadgets are NEVER helpful to feed the baby, but it can make his eating habits even more worse. So, stop this.
Next Steps
Stick to the advise and monitor for next 1 month.