Would love some advice. I have a 6 month old who is desperate to crawl but she is finding it very frustrating on our slippery wooden floors. Was looking at the interlocking alphabet play mats or something similar but they all say age 3+. ANy ideas why? And can anybody advise on a good mat we could use - the floor is very slippy so the soft play mats are just moving around under her knees! thanks (I am sure I will learn to regret helping her out with the crawling like this - but hey I still have plenty of that pregnancy weight to shift