From experience & talks with insurance advisers like Roy (lurking somewhere here

) - i'd suggest go only for medical & hospitalization.
Reason:
3D (death disease disability) - for most insurers, the critical disease, by the time diagnose & get $ to try & save life... may be too late as diagnosis must be "certain stages" before can claim.
eg. cancer 3rd stage, not initial stage 1.
Another thing to consider:
IF your child stays "overseas" (incl SG & TH) for 90 days consecutively or more, better get yr child that country's medical coverage, NOT MY's coverage.
Also another learning experience for me when my child went to SG for studies.
As for amount of coverage (i dont look at the premium since it's the coverage that's important to me), personally i took:
Wanted: RM150K * (1+4% assumed inflation pa)^25 years
LESS: RM i had in emergency buffer & employer's family coverage
= Coverage per annum i bought to cover him up to post University-working life, then they can go buy their own

Papa not billionaire thus no silver or platinum spoon <feeding>

Reasons:
a. RM150K - approximate changgih-enough cancer treatment pa now
b. 4%pa - inflation assumed. Yes yes - a lot of fellows will shout inflation is higher, especially medical blah blah
FYI when my dad contracted cancer 20+ years ago, the cost *4%pa inflation till now still more than covers. Advances in medical science dont mean we have to go for cutting edge (just newly developed) that cost a bomb if the "% of higher successis" minor VS standard treatment.
c. 25 years - coz no silver or platinum spoon <feeding>
Note - dont be a sucker buying as much as U can.
Insurances are risk transference tools AT A COST. That's why we pay something called a PREMIUM.
Premium = risk's cost (if U bear yrself) +admin cost to run company +agent's commissions +shareholders' profits +CEO's big fat bonuses

Better to take just enough - then use the remaining to invest.
Dont believe me pls - just get the quotations AND ask for the total premium till 80 years old (from 0 to 80)
Look at the total premiums paid - can buy a few lives liao AND we pray we dont collect!
If my plans is aligned with my BIG BOSS' (Him) plan, i should not be needing death (yes death, not life - payout is upon DEATH), disease, disability or medical/hospitalization for my entire family by the time i retire.
Just my PoV - from one father to another

BTW, congratulations & <high five> yr child is lucky to have a father that steps up & plans before needed.
Next is studies & Uni then estate planning
PS: Not all insurers will insurer newborns - especially if complicated birth or below certain kg (ie went into Neo-natal ICU after birth). Again from experience heheh - had a normal birth + a very complicated pregnancy & pre-term experiences
Cancer if it is zero staging, it is only payable under Early CI, and not under the 36 CI Cancer definition.
Nowadays, can buy during pregnancy, and in your case the medical card will start upon birth
Of course if there is any pre-existing (for example if baby is born with hole in the heart) that will be an exclusion on the medical card.
If 'infant care' is attached, we will reimburse up to RM30K (for 2 years), see spoiler