V sleepy 8 week old - growth spurt?

[owltrousers]

I have an 8 week old DS, he sleeps 8pm-8am at night usually with one wake up at 3am for a feed and change then during the day he will have two or three 45min-1 hour naps. These past two days his night time sleeps have remained the same but during the day he is basically sleeping 11am - 3pm in a massive 4 hour block, then also having little cat naps. Should I be concerned or is it likely to be a growth spurt?

Is he bright and alert at times? Is he growing?

Yes! he's definitely growing as putting on weight at a hefty rate, he is smiley and engaging when he's awake also.

I wouldn’t worry then, just enjoy it